[GUIDE] Install NvFlash Flatline (become unbrickable!!) - Transformer TF300T General

This Optimized Guide is for NvFlash Flatline only! That is for stock Android Versions: 10.6.1.15.3 - 10.6.1.27.5.
According to this post and this post, it works with the tf300tg as well. Bootloader: 10.6.2.11
Original Thread: http://forum.xda-developers.com/showthread.php?t=2455922
Why install NvFlash?
rayman said:
The AndroidRoot.Mobi Team is proud to present Flatline: Nvflash for TF300T Jellybean!
This release allows generating nvflash blobs for your specific device, making your device unbrickable as long as you have a copy of the blobs.
As a brand new feature, it will also enable wifi and upload a copy of the blob to androidroot's server. Later, a solution will be released to retrieve the blobs from the server if you ever loose them.
https://www.androidroot.mobi/pages/guides/tegra3-guide-nvflash-jellybean/
Credit goes to the AndroidRoot.Mobi team:
Bumble-Bee (Apache14), IEF, kmdm, lilstevie & RaYmAn.
Click to expand...
Click to collapse
You will need ADB and fastboot for this: http://forum.xda-developers.com/showthread.php?p=42407269. I would suggest keeping the tablet at least at 50% battery.
Guide:
1) Download files
NvFlash for windows.
and the TF300 image, which is a custom recovery for the purpose of flashing the AndroidRoot Bootloader.
Place image in ADB folder, and rename it to: flatline_device.img
2) Install Naked Drivers. This may be optional for you. If you can proceed to the next step without, you won't need it.
3) Enter fastboot by rebooting and holding down the power and vol down button. TF300 enters fastboot automatically since this is 4.2 BL.
4) Next we need to enter a command. In side the ADB folder, hold shift and right click. Then select Open command window here.
first check to make sure the device is connected:
Code:
fastboot devices
The device serial number should be listed.
enter command:
Code:
fastboot flash recovery flatline_device.img -i 0x0b05
Blue bar on device will fill. Be patient.
5) Reboot the Device back into Android. This is an important step.
6) Reboot into recovery which should be CWM at this point. Go Advanced -> Wheelie. Accept the warning.
step 1) Flash AndroidRoot BL
The device will shut down, reboot into Android. Then reboot back into recovery.
step 2) Once back in recovery select go to Advanced ->:”Generate wheelie blobs” Be patient here too.
They can be found in the device at /data/media/AndroidRoot" or /tmp/AndroidRoot
You can use ADB to get them:
Code:
adb pull /data/media/AndroidRoot
or
Code:
adb pull /tmp/AndroidRoot
Alternatively, you can use a root file explorer such as ES File Manager. Be sure to copy all of the files out of the directory. Make sure you have root access before you try to search for the files.
Keep this file safe in multiple places.
7)The next section (Accessing NVFlash) is for creating more essential backups with NVFlash.
step 1) Hold down the volume up key while rebooting and the tablet is plugged in via USB. (This may take a few tries to get into APX mode). If you are successful, the screen will be blank and the device name on the computer will be something along the lines of "NVIDIA APX"
step 2) Take the NvFlash tools zip and extract them to a folder. Shift right click in that folder and select "Open Command window here".
step 3) Copy the blob.bin from the Step # 7 above into the NvFlash folder.
step 4) run the command:
Code:
wheelie --blob blob.bin
8) Next we run some commands to get even more backup files. These should all be run from the same command window in the previous step.
Code:
nvflash --resume --rawdeviceread 0 2944 bricksafe.img
Code:
nvflash --resume --read 14 factory-config.img
Code:
nvflash --resume --read 7 unlock-token.img
These files will be stored in C:\User\AppData\Local\VirtualStore (on the computer)
If they are not there, run a search on your computer for
Code:
*img
9.) Flash any other recovery you want, including TWRP. Be sure it is the correct version for your bootloader.
10.) Store ALL of the img files AND the blob.bin AND all other files in the folder in multiple safe places (email, dropbox, HDD, flash drive, SD card, tape backup, or your favorite plant etc.)
11.) Enjoy the peace of mind that you can now restore your device if you brick it
Hit that thanks button if I helped and also thanks to @bucket81 and of course AndroidRoot.mobi devs @rayman

Recovery
For recovery from a brick when you have already made your NvFlash backups, look here:
As @ebildude123 pointed out, first try
Code:
nvflash -r --download 5 twrp.blob
where the output should be:
Code:
Nvflash v1.13.87205 started
[resume mode]
sending file: twrp.blob
- 8165480/8165480 bytes sent
twrp.blob sent successfully
ebildude123 said:
Then the device proceeded to reboot into android
Click to expand...
Click to collapse
If that does not work, try using the method here:
http://forum.xda-developers.com/showthread.php?t=2590450
Thanks to @lj50036 and @bucket81

Hello guys! This nvflash does it work in the Memopad 301T or only TF300T? Both tab works for Tegra 3.

nadorf said:
Hello guys! This nvflash does it work in the Memopad 301T or only TF300T? Both tab works for Tegra 3.
Click to expand...
Click to collapse
If you can flash a Tf300t version of CWM recovery to your ME301 then it could work. I dont have a 301, so i cant test it but i dont think it will because this is bootloader specific and the me301 does not have the same bootloader.

Does this work with TF300TG\L?

spider623 said:
Does this work with TF300TG\L?
Click to expand...
Click to collapse
Im not sure if you can flash a tf300t recovery on a TG or L. If you can, then it should work fine, but if you have to use a separate recovery, then this may not be compatible. You could try modding a tf300tg CWM with the NVflash scripts though, but dont expect any support.

cmendonc2 said:
4) Next we need to enter a command. In side the ADB folder, hold shift and right click. Then select Open command window here.
first check to make sure the device is connected:
Code:
adb devices
The device serial number should be listed.
enter command:
Code:
fastboot flash recovery flatline_device.img -i 0x0b05
Blue bar on device will fill. Be patient.
Click to expand...
Click to collapse
Think you mean fastboot devices not adb devices

cmendonc2 said:
Im not sure if you can flash a tf300t recovery on a TG or L. If you can, then it should work fine, but if you have to use a separate recovery, then this may not be compatible. You could try modding a tf300tg CWM with the NVflash scripts though, but dont expect any support.
Click to expand...
Click to collapse
It is for twrp but no idea for cwm
Sent from my Nexus 4 using Tapatalk

spider623 said:
It is for twrp but no idea for cwm
Sent from my Nexus 4 using Tapatalk
Click to expand...
Click to collapse
You could use WinRar to extract the NvFlash scripts from the tf300t image version but i dont really know how you would implement those then,

cmendonc2 said:
You could use WinRar to extract the NvFlash scripts from the tf300t image version but i dont really know how you would implement those then,
Click to expand...
Click to collapse
No need, they are the same, only difference is one file that you can put in any rom before flashing to her the radio to work, same for the TL
Sent from my Nexus 4 using Tapatalk

Just wondering, if I made the blobs for preJB, then upgraded to JB (so now I'm on JB bootloader), should I bother using Flatline? or will my preJB blobs be ok (and make me unbrickable)?

cravinRiboflavin said:
Just wondering, if I made the blobs for preJB, then upgraded to JB (so now I'm on JB bootloader), should I bother using Flatline? or will my preJB blobs be ok (and make me unbrickable)?
Click to expand...
Click to collapse
Well, when you restore, you restore back to ICS bootloader so you will have to reflash the stock JB zips first. I don't think its worth the hassle if you already have them.

Hey guys, I want to get some custom ROM to my TFT300. But first I want install this NvFlash Flatline, if anything goes wrong.
But now I´m looking that my android version is already 10.6.1.27.5.-20130902.
But you say in the first post that the Flatline is only for 10.6.1.15.3 - 10.6.1.27.1.
So is it a problem or it should be working anyway?
Thanks a lot

BrakeZ said:
Hey guys, I want to get some custom ROM to my TFT300. But first I want install this NvFlash Flatline, if anything goes wrong.
But now I´m looking that my android version is already 10.6.1.27.5.-20130902.
But you say in the first post that the Flatline is only for 10.6.1.15.3 - 10.6.1.27.1.
So is it a problem or it should be working anyway?
Thanks a lot
Click to expand...
Click to collapse
Since it is also the latest 4.2 bootloader, it should work fine.

cmendonc2 said:
Since it is also the latest 4.2 bootloader, it should work fine.
Click to expand...
Click to collapse
I had 10.6.1.27.5 on my device before i upgraded it to CM11 with Grimlock kernel. I did it with the tool for idiots in a hurry so i did not remember to do this but one guy at Q & A section said this should be easy to do even i have CM11. I am kind of new with these tablets and android so i dont know very much but does that work exactly same way even i have CM11 that i would have Stock rom with 10.6.1.27.5 or is the bootloader changed in the CM11? I have Scanno TWRP. As i said i am very confused about these names and dont know very much but little guidance would be a great help.
I can read the guides and do as they told but im just too scared to do that when i am not 100% sure that everything is compatible and that bootloader thing is very strange because i dont know what bootloader i have in CM11.

Matatusku said:
I can read the guides and do as they told but im just too scared to do that when i am not 100% sure that everything is compatible and that bootloader thing is very strange because i dont know what bootloader i have in CM11.
Click to expand...
Click to collapse
Installing CM does not change your bootloader, so if you were running the latest Asus firmware before, you should be fine.
To make sure, you can check the bootloader version on the top-left of the bootloader screen.
Sent from my TF300T using Tapatalk

Matatusku said:
I had 10.6.1.27.5 on my device before i upgraded it to CM11 with Grimlock kernel. I did it with the tool for idiots in a hurry so i did not remember to do this but one guy at Q & A section said this should be easy to do even i have CM11. I am kind of new with these tablets and android so i dont know very much but does that work exactly same way even i have CM11 that i would have Stock rom with 10.6.1.27.5 or is the bootloader changed in the CM11? I have Scanno TWRP. As i said i am very confused about these names and dont know very much but little guidance would be a great help.
I can read the guides and do as they told but im just too scared to do that when i am not 100% sure that everything is compatible and that bootloader thing is very strange because i dont know what bootloader i have in CM11.
Click to expand...
Click to collapse
No, the bootloader does not change when you flash ROMs. So, you still have the 10.6.1.27.5 bootloader installed on your tablet. When you run the guide, the TWRP you have by scanno will be overwritten and you will have to flash it again at the end once you have made the backups.

cmendonc2 said:
No, the bootloader does not change when you flash ROMs. So, you still have the 10.6.1.27.5 bootloader installed on your tablet. When you run the guide, the TWRP you have by scanno will be overwritten and you will have to flash it again at the end once you have made the backups.
Click to expand...
Click to collapse
Would this method work for 10.6.1.14.10? Because I see that this is the latest one and I can't get above that version at this time. Not even on the official site. (TF700T)

aminpro715 said:
Would this method work for 10.6.1.14.10? Because I see that this is the latest one and I can't get above that version at this time. Not even on the official site. (TF700T)
Click to expand...
Click to collapse
Well I'm not experienced with tf700t bootloaders, but it says that it is compatible with bootloader version 10.6.1.14.4. That may be the same as 10.6.1.14.10 but you will have to check in the tf700 forum.

Does not work for me in step 4!
hello
I have followed your tutorial on my Asus TF300T Android 4.2.1 build 10.6.1.27.5.
I installed ADB Fastboot, placed flatline_device.img file in the ADB folder.
When I get to step 4 the fastboot devices command displays the serial number of my tablet but the command to flash the image file does nothing !...
My question is: Should the tablet be rooted for this manipulation? or it could be something else?
Thank you for your help

Related

Nexus S Official factory images for 9020t & 9023

http://code.google.com/android/nexus/images.html#yakju
https://groups.google.com/forum/?fromgroups#!topic/android-building/b50nY_onbP4
^Thanks.
This can be flashed via CWM recovery ?
(after a 'fastboot oem lock/unlock' ?)
No. They are fastboot images. If you're not sure what these are and how to use them then I would not mess with them.
^ gotcha
can someone please put up a tutorial/guide to do this.
I really want to try this.
The shell script gives you the exact fastboot commands to run if you want to do it manually. And it will restore your phone to a true factory state with 4.0.4.
if i will use the factory img the baseband version in bootloader will be change? i see now i9020xxkl1 but my nexus is i9023?
I was wondering the same .. In the zip it says :require board=herring
require version-bootloader=I9020XXJK1|I9020XXKA3|I9020XXKI1|I9020XXKL1
require version-baseband=I9020XXJK8|I9020XXKB1|I9020XXKD1|I9020XXKF1|I9020XXKI1|I9020UCKB2|I9020UCKD1|I9020UCKF1|I9020UCKJ1|I9020KRKB3|M200KRKC1
So it should be okay , because when I reboot into the bootloader of my phone it says :
Bootloader version: I9020XXKL1
Baseband version : I9020XXKI1
My phone actually is a I9023 so I gues the images are okay to flash on a I9023
Just noticed that the full ROM version for Nexus S is 4.0.4 IMM76D. Wouldn't be better to flash this complete rom instead of the partial patch OTA which is clearly giving troubles?
HELPPPPP
can someone please put up a tutorial/guide to do this.
I really want to try this.
i wrote a guide
http://forum.xda-developers.com/showthread.php?t=1572307
goldy_rocky said:
can someone please put up a tutorial/guide to do this.
I really want to try this.
Click to expand...
Click to collapse
(No time to write a full tutorial right now but...) I'd say...
Pls wait for someone experimented to confirm what I say because I couldn't try it to confirm it works right now... And also try it at your own risk...
If your bootloader is not unlocked, follow PART 1 & PART 2 of this tutorial. (you will loose data)
(Note that ADB is not in tools folder anymore but in /platform-tools so that's where the part2 cmd as to be runned from)
Then if windows (I guess you would know what to do if on Linux) use 7zip to extract (2 times) all files from the archive.
Then copy the files to the /platform-tools folder.
The open a command prompt in that folder (shift+right click>open a command prompt here).
Then use the commands provided in the .sh script to flash all files (you can read it easily with Notepad++ for instance) one by one...
Note I don't think you can run the "sleep 5" cmd manually but you can of course wait 5' manually .
Code:
fastboot flash bootloader bootloader-crespo-i9020xxkl1.img
fastboot reboot-bootloader
sleep 5
fastboot flash radio radio-crespo-i9020xxki1.img
fastboot reboot-bootloader
sleep 5
fastboot -w update image-soju-imm76d.zip
I'm not really sure if bootloader will be locked at this time but my guess is no so just reboot the bootloader ("fastboot reboot-bootloader" or shut down the device then "Boot the SNS into the Bootloader Interface, by holding Volume UP & Power button" and look for the "LOCK STATE - LOCKED" or "LOCK STATE - UNLOCKED").
If "LOCK STATE - UNLOCKED" you may want to lock the bootloader again, just follow part2 again and replace "fastboot oem unlock" by "fastboot oem lock"
EDIT :
ale.landra91 said:
i wrote a guide
http://forum.xda-developers.com/showthread.php?t=1572307
Click to expand...
Click to collapse
You just made me feel so useless ...
First of all, the credits goes to "a2b". I am only put his work here via a link.
Secondly, PLEASE KEEEP IN YOUR MIND THAT NEITHER ME OR "a2b" IS RESPONSABLE FOR ANY LOSS OF YOURS IF YOUR PHONE GET BRICKED.
The thrid, I have tried the method on my Nexus i9023. It works perfectly for me. BUT, I cannot gurentee it works for everyone.
Okay, I just flashed the factory img according to a2b's tutorial for Galaxy Nexus. But for me I just needed to change the names for few files. If you cannot figure out what to change, I suggest you follow albundy2010's advice on post #3
Good luck!
http://androidtobe.blogspot.com/2011/12/galaxy-nexus-installing-ics-402-from.html
Seems most are not familiar with doing this so here are some things you should know.
Doing this will wipe EVERYTHING off your phone. Yes, everything including /sdcard.
Do not be a fool and flash these images to the 4g.
I am not certain about this and if you it and your phone gets messed up do not blame me.
The 9020a should be able to run this factory image. Check to see what version of the bootloader you have. If it matches one of the bootloaders in the .sh script you should be fine. I would NOT flash the bootloader included in this factory image myself. Since I do not know for sure if they are the same for both GSM models. If you follow the guide minus the parts where you flash the bootloader and the radio image I believe it will work.
Again if you try this and it breaks your phone that is on you. I am not responsible for it. I do not have a 9020a to test this on and verify it. I am fairly certain it will work perfectly. If anybody tries it let me/us know the outcome.
is there any specific advantage in flashing the factory image as opposed to flashing the incremental update ? I successfully flashed 4.0.4 using CWR over a full rom installation of 4.0.3 back from December. I wonder if there may be some subtle differences that maybe make it a bit better option to install the factory image ?
mindwalkr said:
is there any specific advantage in flashing the factory image as opposed to flashing the incremental update ? I successfully flashed 4.0.4 using CWR over a full rom installation of 4.0.3 back from December. I wonder if there may be some subtle differences that maybe make it a bit better option to install the factory image ?
Click to expand...
Click to collapse
No
Sent from my Nexus S using XDA App
I used the flash-all.sh script from the factory image file and it didn't wipe the sdcard. Backed it up beforehand anyway just in case. Recovery was broken on reboot. Flashed CWM recovery and all good. i9023.

[GUIDE] Nvflash-ICS Restore

Nvflash-ICS Restore!
This guide will not provide information to install Nvflash-ICS as that is covered well elsewhere.
Once you have read the information on that page click Guide.
All necessary partitions are backed up with Nvflash and you can restore only the ones necessary to recover your unit.
The second method to restore has been removed until further study can be done!
If your problem can't corrected using this information and normal use of recovery, adb, and fastboot go to this post to access the IRC channel for all Asus transformers using nvflash.
I have finished installing Nvflash but where are my files?
/sdcard/AndroidRoot/ - this is your internal sdcard
Click to expand...
Click to collapse
What files should I have?
blob.bin
blob.txt – the extension on this file varies
bootloader.ebt
create.bct
recovery.bct
bricksafe.img
factory-config.img
unlock-token.img
Click to expand...
Click to collapse
Nvflash recovery and going back to ICS for a fresh start.
Use blobunpack to unpack a stock ICS blob. The blob is found by unzipping the stock ICS firmware twice.
You can find the ICS firmware at this link (9.4.3.30) (post #3).
[INDEX][18 April 2013]TF300T & TG-INDEX of Roms/Dev Guides/Kernels/Recoveries/etc.
Please give philos64 a thanks while there, without him you would have a very hard time finding these downloads if at all.
these files have to be in the folder with Nvflash
wheelie -r --blob blob.bin -created with Nvflash install
nvflash --resume --download 4 blob.EBT -created with blobunpack
nvflash --resume --download 10 blob.APP – created with blobunpack
nvflash --resume --download 6 blob.LNX – created with blobunpack
nvflash --resume --download 5 recovery.img-ICS twrp recovery image name
nvflash --resume --go
then press volume down to enter twrp, flash root, flash rom or whatever you wish
Click to expand...
Click to collapse
If your problem can't corrected using this information and normal use of recovery, adb, and fastboot go to this post to access the IRC channel for all Asus transformers using nvflash.
What is blobunpack?
Here are some links to download and explain use.
https://github.com/AndroidRoot/BlobTools
windows compiled blobtools - http://forum.xda-developers.com/showpost.php?p=21620550&postcount=24
see post #7 for info - http://forum.xda-developers.com/show....php?t=1068548
There were no dates for the following information.
The current AndroidRoot.mobi bootloader versions are
Transformer Prime: 9.4.2.28r01
Transformer TF300: 9.4.3.30r01
Transformer TF700:9.4.5.30r01
ChangeLog:-
Patch: Enable ‘fastboot boot’ command (removes ‘fastboot continue’, use ‘fastboot reboot’ instead).
Patch: Force unlocked state (protect your unlock status no matter what happens to your token).
Patch: Remove blob requirement from ‘fastboot flash’ (Flash the raw images (example: ICS_recovery.img) and not blob files).
Click to expand...
Click to collapse
When failing to get into APX mode you can try the following suggestions.
Special thanks to wha2do and daws for their input!
Also wha2do has posted a guide to enter APX that provides detail not found here! Please see his guide and give proper thanks if you find it helpful!
http://forum.xda-developers.com/show...3#post36159253
1.To enter APX mode you either have to boot, choose reboot (if available) and hold volume up pressed until it reboots and then the screen should remain black. Or if that doesn't work, completely shutdown your tablet and wait a second or two and then hold volume up pressed while pressing power on and keep it pressed until screen is blank.
or
2.fastboot -i 0x0B05 reboot (hold volume up)
or
3. adb reboot (hold volume up)
or
4. with unit powered on hold volume up and press reset with paperclip - (don't press hard)
reset is located about 25mm or 1in below the sdcard
or
5. su
reboot -hold volume up.
This is done using a terminal; Android terminal is free from the play store. You must be rooted for this to work.
or
6. Another way:- Provided by daws
Power off the tablet and don't touch the power button again.
Connect USB cable to tablet but not to PC yet.
Press volume up and then connect USB cable to PC.
Wait a few seconds before releasing volume up button.You should now be in APX mode.
Thanks for the help daws.
or
Only if there is no other resort!
7. remove cover from unit, disconnect battery, press and hold volume up, reconnect battery!
Click to expand...
Click to collapse
Good Luck!
Click to expand...
Click to collapse
Due to my dock smoking my motherboard I have purchased a new motherboard and luckily it came as 4.0.3 ICS.
I now have installed and use Nvflash on my tablet.
In case anyone is interested this is the unit I purchased.
The box shows - Manufacturer's Reconditioned Parts - 90 Day Limited Warranty.
Usefull guide
Good work and helpfull guide for xda members :good:
Nice stuff
philos64 said:
Good work and helpfull guide for xda members :good:
Nice stuff
Click to expand...
Click to collapse
Thank you for your kind words.
can I use these file
blob.bin
blob.txt – the extension on this file varies
bootloader.ebt
create.bct
recovery.bct
bricksafe.img
factory-config.img
unlock-token.img
from other tf300t to unbrick my tf300T bricked ver 4.1.2.?.
chanhny said:
can I use these file
blob.bin
blob.txt – the extension on this file varies
bootloader.ebt
create.bct
recovery.bct
bricksafe.img
factory-config.img
unlock-token.img
from other tf300t to unbrick my tf300T bricked ver 4.1.2.?.
Click to expand...
Click to collapse
No.
The files contain device-specific keys and cannot be used for other devices.
See the original thread for details:
[DEV][TOOL][BRICKPROOF]TF300 NVFlash release!
There's something I've not been quite clear about with NVFlash.
So I do my backup and keep my files.
Afterwards I upgrade to Jelly Bean (because I need the JB bootloader for ROM's right?), put TWRP recovery on, and flash a new ROM that uses the bootloader version I have.
So now I have the JB bootloader, can I still enter APX mode and do a restore, or do I have to remain on ICS bootloader to do a restore?
Is NVFlash truly unbrickable? A glance at this forum shows loads of bricks, would this have sorted their problem if they backed-up first?
Thanks!
tobdaryl said:
This guide will not provide information to install Nvflash as that is covered well elsewhere.
Once you have read the information on that page click Guide.
All necessary partitions are backed up with Nvflash and you can restore only the ones necessary to recover your unit.
I have finished installing Nvflash but where are my files?
What files should I have?
Nvflash recovery and going back to ICS for a fresh start.
What is blobunpack?
Caution
Caution
There were no dates for the following information.
When failing to get into APX mode you can try the following suggestions.
Caution
Full brick recovery
Caution
Good Luck!
Click to expand...
Click to collapse
I played around with your instructions today. Ran into 2 snags:
1. Using blob UI, I typed "u" for unpack, then "blob." It returned with "cannot open 'b'";
2. Typed blobunpack.exe blob. Gave me all the files as shown in attached thumb, except LNX. Where did I go wrong?
graphdarnell said:
I played around with your instructions today. Ran into 2 snags:
1. Using blob UI, I typed "u" for unpack, then "blob." It returned with "cannot open 'b'";
2. Typed blobunpack.exe blob. Gave me all the files as shown in attached thumb, except LNX. Where did I go wrong?
Click to expand...
Click to collapse
I'm having problems with the UI myself. It worked properly when posted. We probably have had an update that broke the UI. I'll remove the link. The tools are easy to use without the UI.
You don't have an LNX extension but you do have boot.img which is the same partition. Did you possibly rename the file and forget? Packing and repacking are still working properly for me including LNX.
I also updated the download link. The link now shown is for the version that can sign when blobpacking.
tobdaryl said:
I'm having problems with the UI myself. It worked properly when posted. We probably have had an update that broke the UI. I'll remove the link. The tools are easy to use without the UI.
You don't have an LNX extension but you do have boot.img which is the same partition. Did you possibly rename the file and forget? Packing and repacking are still working properly for me including LNX.
I also updated the download link. The link now shown is for the version that can sign when blobpacking.
Click to expand...
Click to collapse
Not really. I didn't touch it. I'll do it again today to see. Thanks for the reply.
No recovery
Hello Everybody,
I followed the instructions to restore my device however when my tf300t reboots I can't get the device into recovery mode. It will start up into android or if I hold the volume down during restart it says "platform pre os boot configuration cold booting linux". I download a ICS twrp img recovery file from here for the tf300t. "http://techerrata.com/browse/twrp2/tf300t"
My only options at this point are to enter APX mode or boot into android.
If somebody could help me install a recovery so I can use custom roms I would appreciate it!!!!!
Thanks,
Mike
waynestatemac said:
Hello Everybody,
I followed the instructions to restore my device however when my tf300t reboots I can't get the device into recovery mode. It will start up into android or if I hold the volume down during restart it says "platform pre os boot configuration cold booting linux". I download a ICS twrp img recovery file from here for the tf300t. "http://techerrata.com/browse/twrp2/tf300t"
My only options at this point are to enter APX mode or boot into android.
If somebody could help me install a recovery so I can use custom roms I would appreciate it!!!!!
Thanks,
Mike
Click to expand...
Click to collapse
Use nvflash again to flash only twrp.
or
Other options
fastboot -i 0x0B05 flash recovery twrp.blob
fastboot -i 0x0B05 reboot
or if rooted
adb shell
su
dd if=/sdcard/twrp.blob of=/dev/block/mmcblk0p4 Then reboot to complete installation.
adb reboot
I use 2.5.0.0 twrp as I have problems with 2.6.0.0.
tobdaryl said:
Use nvflash again to flash only twrp.
or
Other options
fastboot -i 0x0B05 flash recovery twrp.blob
fastboot -i 0x0B05 reboot
or if rooted
adb shell
su
dd if=/sdcard/twrp.blob of=/dev/block/mmcblk0p4 Then reboot to complete installation.
adb reboot
I use 2.5.0.0 twrp as I have problems with 2.6.0.0.
Click to expand...
Click to collapse
Thanks tobdary for replying back. I tried other versions of the recovery but none seem to work. I can't do that fastboot method because I dont get the fastboot option when the I hold the volume down and power like I did when the tablet was bone stock. I can't get su access on the tablet because its not rooted anymore once I reinstalled the nvflash rom so I cant try and flash recovery that way either. I'm really stuck and not sure why this isn't working!
Thanks,
Mike
waynestatemac said:
Thanks tobdary for replying back. I tried other versions of the recovery but none seem to work. I can't do that fastboot method because I dont get the fastboot option when the I hold the volume down and power like I did when the tablet was bone stock. I can't get su access on the tablet because its not rooted anymore once I reinstalled the nvflash rom so I cant try and flash recovery that way either. I'm really stuck and not sure why this isn't working!
Thanks,
Mike
Click to expand...
Click to collapse
I'm not sure either.
Try flashing stock recovery and recheck your bootloader menu for fastboot.
tobdaryl said:
I'm not sure either.
Try flashing stock recovery and recheck your bootloader menu for fastboot.
Click to expand...
Click to collapse
Do you know where I can find the stock recovery? Is it something ziped in the original rom file?
I was able to root the tablet using a program that that uses a exploit while android is running. I then could adb through su access and flash different twrp recovery blob files to the tablet. Though the tablet rebooted and showed a blue line with recovery being installed when I restarted I have no options to load recovery, fastboot, or linux. I'm thinking the bootloader is corrupt. I own a tf201 and might have accidentally used one of the hairybean 2.3 (4.2) bootloader updates for that device on this one. Is there a way to get my bootloader back to the original and maybe that will fix it?
Thanks,
Mike
waynestatemac said:
Do you know where I can find the stock recovery? Is it something ziped in the original rom file?
I was able to root the tablet using a program that that uses a exploit while android is running. I then could adb through su access and flash different twrp recovery blob files to the tablet. Though the tablet rebooted and showed a blue line with recovery being installed when I restarted I have no options to load recovery, fastboot, or linux. I'm thinking the bootloader is corrupt. I own a tf201 and might have accidentally used one of the hairybean 2.3 (4.2) bootloader updates for that device on this one. Is there a way to get my bootloader back to the original and maybe that will fix it?
Thanks,
Mike
Click to expand...
Click to collapse
The first thing you flash in this guide is the bootloader. nvflash --resume --download 4 blob.EBT
With nvflash you can flash only what is needed for your situation. If you feel the problem is the bootloader you can flash just that and try again.
What you describe sounds like stock recovery is still working on your tablet. If flashing the bootloader does not help I would use stock 9.4.3.30, unzip once and place the remaining zip on your internal sdcard. You may get an update notification. Accept it and let your tablet do the work. If you don't get the notification reboot your tablet and you should see it then. Doing this will write stock bootloader, recovery, etc.
Stock recovery is the blob.SOS when you blobunpack. Just use the stock 9.4.3.30 blob and use the resulting SOS (recovery.img).
TF300T Bricked accessible using APX Mode.
Hello @tobdaryl
I have read your thread fully, but my case differs a little bit and need your advice:
I have unlocked ASUS TF300T.
I cant access FastBoot or ADB.
I can access the APX mode.
The ASUS shows only the ASUS logo when powered on.
I don't have BackUp of anything.
I have flashed everything from my ASUS, even the recovery. (I was novice):angel:
Any suggestions or advices please?
What should i do and from where shall i get the needed files, etc...
Thank you in advance.
Nader H.AL-Dirany
NaderALDirany said:
Hello @tobdaryl
I have read your thread fully, but my case differs a little bit and need your advice:
I have unlocked ASUS TF300T.
I cant access FastBoot or ADB.
I can access the APX mode.
The ASUS shows only the ASUS logo when powered on.
I don't have BackUp of anything.
I have flashed everything from my ASUS, even the recovery. (I was novice):angel:
Any suggestions or advices please?
What should i do and from where shall i get the needed files, etc...
Thank you in advance.
Nader H.AL-Dirany
Click to expand...
Click to collapse
I have read your previous posts in addition to this one.
There are four vehicles to restore your tablet. (some things can be done within android but you have no access)
1. recovery - stock or twrp
2. fastboot
3. adb
4. nvflash
I notice you also posted in my guide for accessing adb, fastboot, and apx. You were unable to access fastboot, adb, or recovery with those methods.
I don't know of any way to recover through apx without nvflash previously installed and you have no access to the other three methods.
Needs Stickied ... thanks man you helped save my butt :good:
Trigger911 said:
Needs Stickied ... thanks man you helped save my butt :good:
Click to expand...
Click to collapse
Thanks! *I'm glad you found the info useful.

[GUIDE] How to Unlock the Bootloader, Flash a Factory Image, and Return to Stock

This guide will help you unlock your bootloader, flash a factory image, and return you to a stock device. It is wriiten assuming you have a windows PC (MAC users, see post 2). This can be helpful if you need to RMA your device or if you are getting erratic behavior or messed something up.
Tools and Files You’ll Need
If you don’t have adb and fastboot installed on your PC go here for a quick install of the necessary files, thanks to @Snoop05, http://forum.xda-developers.com/showthread.php?t=2588979
For MAC users go here. http://forum.xda-developers.com/showthread.php?p=32305619
For Linux users, http://forum.xda-developers.com/showthread.php?p=10746225
For the factory image go here, https://developers.google.com/android/nexus/images You’ll download a .tgz file. Use winrar or 7-zip to extract the file to its own directory and remember where that directory is. Inside is another zip file, extract that too. You’ll need those image files if you use the long method to install the factory image. It’s also good to know where they are as they come in handy as you get more familiar with fastboot and what you can do with it.
How To Unlock the Bootloader
If you don’t have developer options enabled on your device go to settings, about device and tap on the build number 7 times.
In settings, developer options enable oem unlock
Now you get to use fastboot! Boot you device into the bootloader, vol up + power with your device shut off. Once booted into the bootloader connect it to your PC with the usb cable and open a command window on your PC. Once connected type the following command in the cmd window:
fastboot devices (Your device serial number should show up and this will ensure fastboot is working properly)
​Then type:
​fastboot oem unlock (This will unlock the bootloader and you’re now good to go)​
NOTE, UNLOCKING THE BOOTLOADER DOES WIPE YOUR DEVICE SO BACKUP OFF YOUR DEVICE FIRST
How To Flash the Factory Image, SHORT METHOD
Open a command window on your PC in the same directory as you extracted the factory image. In that directory shift, right click in an open area and use “Open a command window here”
Boot your device into the bootloader and connect it to your PC. Then simply double click on the flash-all batch file. Note that there are batch files in there that will work for Windows as well as Linux machines
Let the batch file run and when it’s done you’ll be back to stock.
NOTE THAT FLASHING BY THIS METHOD DOES WIPE YOUR DEVICE SO MAKE SURE YOU BACKUP OFF YOUR DEVICE FIRST.
How To Flash the Factory Image, LONG METHOD
In this method each factory image is flashed separately. This should be used if you have problems with the short method and as you get more familiar with fastboot you’ll be able to flash only the images that you need for your specific requirement. For instance, you might want to only flash the stock recovery if you’re trying to take an ota and you’ve installed a custom recovery. The order that you flash the images is not important.
In the folder you extracted the factory image it’s easiest if you re-name the bootloader image file to simply bootloader and radio. Then open a Windows command window in that folder and use the fastboot commands:
fastboot flash bootloader bootloader.img
fastboot reboot-bootloader
fastboot –w (NOTE, this command does wipe your device. It’s possible to flash the factory image without this command but if you’re going from different revision numbers of android it’s highly recommend to wipe the device)
Now open a Windows command window in the same folder that you extracted the zip file in, the one where you find recovery, system, etc. Then run the fastboot commands:
fastboot flash boot boot.img
fastboot flash cache cache.img
fastboot flash recovery recovery.img
fastboot flash system system.img [Note, flashing system takes a long time, so let it do it's thing]
fastboot flash vendor vendor.img
Congratulations, you’ve now flashed a factory image and learned how to use fastboot!
For MAC users, proceed each fastboot command with a ./ e.g. ./fastboot flash boot boot.img
This should be made a 'sticky'...
An excellent well written tutorial... succinct, clear and to the point.
Far better to use fastboot instead of a toolkit... Everything is more transparent, and you actually gain a better understanding of your device as a result.
Rgrds,
Ged.
GedBlake said:
This should be made a 'sticky'...
An excellent well written tutorial... succinct, clear and to the point.
Far better to use fastboot instead of a toolkit... Everything is more transparent, and you actually gain a better understanding of your device as a result.
Rgrds,
Ged.
Click to expand...
Click to collapse
Thanks @GedBlake. I would have responded sooner but I had to get home and check my tablet. Actually both work, vol up + power and vol down + power.
Sent from my Nexus 9 using XDA Free mobile app
But.... Toolkit so easy?
(agreed... Toolkits not the best choice)
Thread stuck. Great guide @jd1639!
If we get enough guides, tutorials, how to's and other great info threads.... I would suggest a "sticky roll up" thread, so too many stickies aren't created.
Food for thought.
Edit : That ^^^^ was a hint to other members to get your guides, tutorials, info threads, FAQ... Etc... Going..... This is a Nexus section after all. :silly:
Darth said:
But.... Toolkit so easy? ?
(agreed... Toolkits not the best choice)
Thread stuck. Great guide @jd1639! ?
If we get enough guides, tutorials, how to's and other great info threads.... I would suggest a "sticky roll up" thread, so too many stickies aren't created.
Food for thought. ?
Click to expand...
Click to collapse
I'll keep an eye it and do a roll up when the need arises
Sent from my Nexus 9 using XDA Free mobile app
cant flash system.img
I Xubuntu 14.04 I can't seem to flash the system.img I get the following error
sending 'system' (1108544 KB)...
FAILED (remote: data length is too large)
finished. total time: 0.032s
nyasha1935 said:
I Xubuntu 14.04 I can't seem to flash the system.img I get the following error
sending 'system' (1108544 KB)...
FAILED (remote: data length is too large)
finished. total time: 0.032s
Click to expand...
Click to collapse
It's possible that you need to update your Android SDK to the latest. There was a recent change (within last 6 months) to fastboot to allow flashing these large .img files.
cam30era said:
It's possible that you need to update your Android SDK to the latest. There was a recent change (within last 6 months) to fastboot to allow flashing these large .img files.
Click to expand...
Click to collapse
Ok thanks gonna try on windows, im a noob on linux
nyasha1935 said:
Ok thanks gonna try on windows, im a noob on linux
Click to expand...
Click to collapse
You'll be sorry.....
cam30era said:
You'll be sorry.....
Click to expand...
Click to collapse
Ok back to linux, how do I update android SDK
nyasha1935 said:
Ok back to linux, how do I update android SDK
Click to expand...
Click to collapse
http://rootzwiki.com/topic/20770-gu...-adb-and-fastboot-in-linux-ubuntu-and-mint12/
Is it possible to flash a factory image using a custom recovery like TWRP?
Sent from my Nexus 9 using Tapatalk
iamroddo said:
Is it possible to flash a factory image using a custom recovery like TWRP?
Click to expand...
Click to collapse
Is it possible to extract the .img from the volantis-lmy47x-factory-3efdc8d4.tgz from https://developers.google.com/android/nexus/images and flash them individually with TWRP (with the exception of recovery.img, which I guess would over-write TWRP)? Can it this be done directly from 5.0.1 or would I need to first upgrade to 5.02?
Hi, I'm Italian so i'm sorry if my english is bad xD what happens if i flash a different kernel? Will i lose my warranty?
If yes, if i flash the factory image, will i have my warranty again?
And, again, sorry for my bad english
Leoncino said:
Hi, I'm Italian so i'm sorry if my english is bad xD what happens if i flash a different kernel? Will i lose my warranty?
If yes, if i flash the factory image, will i have my warranty again?
And, again, sorry for my bad english
Click to expand...
Click to collapse
No need top apologize. You're English if fine.
There's a lot of discussion and lack of agreement about what affects the warranty on the Nexus 9. HTC says that even unlocking the bootloader "may void the warranty".
My advice would be to do what you want to it, but make sure you understand what you are doing. Ask a lot of questions before you do something you're unsure of.
Unlock your bootloader (if you haven't already). Do not relock bootloader if something goes wrong (this does not solve anything). With an unlocked bootloader, you can recover from almost any problem.
And you can flash the Google factory images anytime you want to return to stock.
I'm sorry there's not a clear answer to your question.
cam30era said:
No need top apologize. You're English if fine.
Click to expand...
Click to collapse
Thanks
So it's like Samsung knox, we don't know what happens to our device.
An other little question? Is the same if i root my device? Need to unlock bootloader?
Leoncino said:
Thanks
So it's like Samsung knox, we don't know what happens to our device.
An other little question? Is the same if i root my device? Need to unlock bootloader?
Click to expand...
Click to collapse
Bootloader has to be unlocked to root, install custom recovery (TWRP). And note that when you unlock bootloader, it will wipe the contents of your SDcard. If you have anything important there, back it up on your PC.
cam30era said:
Bootloader has to be unlocked to root, install custom recovery (TWRP). And note that when you unlock bootloader, it will wipe the contents of your SDcard. If you have anything important there, back it up on your PC.
Click to expand...
Click to collapse
And what happens if i lock again my bootloader, will i restore the warranty?
Leoncino said:
And what happens if i lock again my bootloader, will i restore the warranty?
Click to expand...
Click to collapse
That's a good question, without a clear answer (unfortunately).

[guide] root for stock lolipop roms without downgrading to kitkat

This guide worked for me. I am using v20i stock rom without any modification. I saw this on web and i want to share it. If you use this guide, it is on your own risk (such as mine)
We will have a rooted lolipop rom without downgrading to any kitkat rom. We dont need to flash bumped twrp for this.
This guide describes for windows users but same method can work with linux. Linux users know how
1- Download this file.
2- Copy zip file to your C:\ hard drive and extract there. It should be like this: C:\g3-root
3- Enter your phone's settings and activate the developer settings (with clicking build number 5-6 times)
4- Enter developer settings and activate usb debbuging
5- Enter the file g3-root and press and hold the shift button on your keyboard and right click with mouse. Select "open command window" or something like this (i am not using english windows)...
6- Connect the phone to your pc with usb cable.
7- Dont let the screen off. If your phone asks you about usb debbuging (trusting the computer), select "remember this" and click "yes"
8- now test the connection... write this into the command window
Code:
adb devices
if you can see your device's serial number, you can start now. If not, check the adb and windows drivers and try it again.
9- push the files which are needed for root with this commands
Code:
adb push g2_root.sh /data/local/tmp/
and
Code:
adb push busybox /data/local/tmp/
and
Code:
adb push UPDATE-SuperSU-v2.46.zip /data/local/tmp/
10- Now we will enter download mode of our phone. For this, discoonnect the usb cable, shut down the phone, press and hold the volume up button and connect the phone.
You will see "downloading" on your screen.
11- Now return the command window. Look your computer and verify which port of windows that the phone is connected . Mine is COM6 and i will go on with this way. You must change this with yours(COM1 COM2 COM3 COM4.... etc) . Enter this command (for COM6)
Code:
Send_Command.exe \\.\COM6
12- Next send this command:
Code:
ls
if you see the folders, everything is fine and you can continue.
13- finally we send last command and gonna be rooted
Code:
sh /data/local/tmp/g2_root.sh dummy 1 /data/local/tmp/UPDATE-SuperSU-v2.46.zip /data/local/tmp/busybox
You can see these lines if rooting is successfull
ui_print - Disabling OTA survival
ui_print - Removing old files
ui_print - Placing files
ui_print - Post-installation script
ui_print - Unmounting /system and /data
ui_print - Done !
Click to expand...
Click to collapse
if not, read and try again.
Now reboot your phone and you can see the supersu app in your application drawer
Good Luck!
I am not responsible of any damage to your phone.
I saw this guide in: http://forum.donanimhaber.com/m_103553600/tm.htm
But the main guide is : blog.lvu.kr/g2-lollipop-%EC%88%9C%EC%A0%95-%EB%A3%A8%ED%8C%85/
credits: these guides
Root is working but the problem is TWRP because is not working its giving error so no flashing other custom rom or mods for now.
Yes root is working fine. I didnt tried twrp or cwm. With this guide, you can use stock odexed and unmodified lolipop rom.
hi guys
New Root Method for LG Devices lollipop
http://forum.xda-developers.com/android/development/guide-root-method-lg-devices-t3049772
jojobans said:
hi guys
New Root Method for LG Devices lollipop
http://forum.xda-developers.com/android/development/guide-root-method-lg-devices-t3049772
Click to expand...
Click to collapse
Same method
LG-D855 cihazımdan Tapatalk kullanılarak gönderildi
agritux said:
Same method
LG-D855 cihazımdan Tapatalk kullanılarak gönderildi
Click to expand...
Click to collapse
evet arkadash
Muhahahah
LG-D855 cihazımdan Tapatalk kullanılarak gönderildi
agritux said:
This guide worked for me. I am using v20i stock rom without any modification. I saw this on web and i want to share it. If you use this guide, it is on your own risk (such as mine)
We will have a rooted lolipop rom without downgrading to any kitkat rom. We dont need to flash bumped twrp for this.
This guide describes for windows users but same method can work with linux. Linux users know how
1- Download this file.
2- Copy zip file to your C:\ hard drive and extract there. It should be like this: C:\g3-root
3- Enter your phone's settings and activate the developer settings (with clicking build number 5-6 times)
4- Enter developer settings and activate usb debbuging
5- Enter the file g3-root and press and hold the shift button on your keyboard and right click with mouse. Select "open command window" or something like this (i am not using english windows)...
6- Connect the phone to your pc with usb cable.
7- Dont let the screen off. If your phone asks you about usb debbuging (trusting the computer), select "remember this" and click "yes"
8- now test the connection... write this into the command window
Code:
adb devices
if you can see your device's serial number, you can start now. If not, check the adb and windows drivers and try it again.
9- push the files which are needed for root with this commands
Code:
adb push g2_root.sh /data/local/tmp/
and
Code:
adb push busybox /data/local/tmp/
and
Code:
adb push UPDATE-SuperSU-v2.46.zip /data/local/tmp/
10- Now we will enter download mode of our phone. For this, discoonnect the usb cable, shut down the phone, press and hold the volume up button and connect the phone.
You will see "downloading" on your screen.
11- Now return the command window. Look your computer and verify which port of windows that the phone is connected . Mine is COM6 and i will go on with this way. You must change this with yours(COM1 COM2 COM3 COM4.... etc) . Enter this command (for COM6)
Code:
Send_Command.exe \\.\COM6
12- Next send this command:
Code:
ls
if you see the folders, everything is fine and you can continue.
13- finally we send last command and gonna be rooted
Code:
sh /data/local/tmp/g2_root.sh dummy 1 /data/local/tmp/UPDATE-SuperSU-v2.46.zip /data/local/tmp/busybox
You can see these lines if rooting is successfull
if not, read and try again.
Now reboot your phone and you can see the supersu app in your application drawer
Good Luck!
I am not responsible of any damage to your phone.
I saw this guide in: http://forum.donanimhaber.com/m_103553600/tm.htm
But the main guide is : blog.lvu.kr/g2-lollipop-%EC%88%9C%EC%A0%95-%EB%A3%A8%ED%8C%85/
credits: these guides
Click to expand...
Click to collapse
Finally YES!!! thank you so mu ch. Will try later.
Root plus Custom Recovery, or Root Only?
Hi,
This is interesting and looks a lot easier than the guide I just put up over the weekend: http://forum.xda-developers.com/lg-g3/general/guide-update-to-lollipop-root-bumpd-twrp-t3048845.
But I wanted to confirm first, this is purely for rooting only, correct? In other words, if I follow only the steps in this guide I will have root...but I will not be able to install a custom recovery (like TWRP) (same as this thread: http://forum.xda-developers.com/android/development/guide-root-method-lg-devices-t3049772)?
EDIT: nevermind, one user of the other thread confirmed my question already: http://forum.xda-developers.com/showpost.php?p=59325441&postcount=55. So indeed, this method is for root only, because this method starts with a fully-flashed Lollipop firmware (inclusive of Lollipop version boot stack - aboot.img, sbl1.img, rpm.img, tz.img, etc.).
topet2k12001 said:
Hi,
This is interesting and looks a lot easier than the guide I just put up over the weekend: http://forum.xda-developers.com/lg-g3/general/guide-update-to-lollipop-root-bumpd-twrp-t3048845.
But I wanted to confirm first, this is purely for rooting only, correct? In other words, if I follow only the steps in this guide I will have root...but I will not be able to install a custom recovery (like TWRP) (same as this thread: http://forum.xda-developers.com/android/development/guide-root-method-lg-devices-t3049772)?
EDIT: nevermind, the OP of the other thread confirmed my question already: http://forum.xda-developers.com/showpost.php?p=59325441&postcount=55. So indeed, this method is for root only, because this method starts with a fully-flashed Lollipop firmware (inclusive of Lollipop version boot stack - aboot.img, sbl1.img, rpm.img, tz.img, etc.).
Click to expand...
Click to collapse
This is a way for rooting from lollipop, and access to fastboot too.
For custom recovery, it needd bump ! , and bump works only with KK bootloader. So for having a custom recovery, we need to downgrade BL first, and inject Bumped recovery + bumped kernel after.
And if we downgrade BL, maybe we need downgrade complete bootstack too (sbl,rpm,tz,dbi,laf) ?
Just to make sure, this works for v20i only or does it work for, say, my v20h too?
6ril1 said:
This is a way for rooting from lollipop, and access to fastboot too.
For custom recovery, it needd bump ! , and bump works only with KK bootloader. So for having a custom recovery, we need to downgrade BL first, and inject Bumped recovery + bumped kernel after.
And if we downgrade BL, maybe we need downgrade complete bootstack too (sbl,rpm,tz,dbi,laf) ?
Click to expand...
Click to collapse
Yup yup, I got it. Thanks. Just wanted to confirm.
Yes, I'm aware also of fastboot ability. Basically, dd if=/dev/zero means "writing zeroes" to whatever partition (in the case of the guide, it's the "laf" partition where "Download Mode" is stored). So, zeroing out the "laf" partition will make the device fall back to standard fastboot - except for the Verizon variant. I think you can do that regardless if you are in Kitkat or Lollipop, since the process is mere deletion of a partition's contents to "force" the device to fall back to fastboot.
Yes, you need to downgrade the entire boot stack. Basically, all partitions will need to stay at "Kitkat" version, and then manually flash ONLY system.img, boot.img, and modem.img (just like the one in my guide). And then, "bump" the boot.img so that you can install a custom recovery. I wrote that in my how-to guide as well.
In my case, I feel uncomfortable not having a custom recovery. I tinker around with my device a lot and have "bricked" it a lot of times but was saved because I have a backup via custom recovery.
I would suggest making it clear that this is for root only (meaning, does not include custom recovery). Very important, because I have seen threads from other users where they got bricked and can no longer restore at all - too bad because they did not have a custom recovery backup.
topet2k12001 said:
Yup yup, I got it. Thanks. Just wanted to confirm.
Yes, I'm aware also of fastboot ability. Basically, dd if=/dev/zero means "writing zeroes" to whatever partition (in the case of the guide, it's the "laf" partition where "Download Mode" is stored). So, zeroing out the "laf" partition will make the device fall back to standard fastboot - except for the Verizon variant. I think you can do that regardless if you are in Kitkat or Lollipop, since the process is mere deletion of a partition's contents to "force" the device to fall back to fastboot.
Yes, you need to downgrade the entire boot stack. Basically, all partitions will need to stay at "Kitkat" version, and then manually flash ONLY system.img, boot.img, and modem.img (just like the one in my guide). And then, "bump" the boot.img so that you can install a custom recovery. I wrote that in my how-to guide as well.
In my case, I feel uncomfortable not having a custom recovery. I tinker around with my device a lot and have "bricked" it a lot of times but was saved because I have a backup via custom recovery.
I would suggest making it clear that this is for root only (meaning, does not include custom recovery). Very important, because I have seen threads from other users where they got bricked and can no longer restore at all - too bad because they did not have a custom recovery backup.
Click to expand...
Click to collapse
@robalm writes in his OP, he uses LP rpm and tz (and cust) in his flashables 20x original fw flzshable zip (i've not verified it was the case)
http://forum.xda-developers.com/showthread.php?p=57223144
6ril1 said:
@robalm writes in his OP, he uses LP rpm and tz (and cust) in his rom (i've not verified it was the case)
http://forum.xda-developers.com/showthread.php?p=57223144
Click to expand...
Click to collapse
Yes, however that is a repackaged firmware (extract everything, root it, and then "bump" the necessary components, and then put it back together as a single flashable zip). That is why it will have root plus "bump" (bump'd boot.img and recovery.img a.k.a. custom recovery). Therefore, those who will download it will no longer have to root it manually. This guide (and mine) are different from repackaged firmwares, in the sense that we are not "pre-rooting" (or "pre-bumping") the firmware. We are rooting (or "bumping") the firmware after installation.
topet2k12001 said:
Yes, however that is a repackaged firmware. That is why it will have root plus "bump" (bump'd boot.img and recovery.img a.k.a. custom recovery). Therefore, those who will download it will no longer have to root it manually. Your guide (and mine) are different from repackaged firmwares, in the sense that we are not "pre-rooting" (or "pre-bumping") the firmware. We are rooting (or "bumping") the firmware after installation.
Click to expand...
Click to collapse
Yes, it seems it's a little different than @autoprime and you propose and i was asking myself if these three partitions were realy needed in this case (flashable zip from kdz exracted) or not.
I should prefer to let them in the bootstack version but maybe i'm xrong.
6ril1 said:
Yes, it seems it's a little different than @autoprime and you propose and i was asking myself if these three partitions were realy needed in this case (flashable zip from kdz exracted) or not.
I should prefer to let them in the bootstack version but maybe i'm xrong.
Click to expand...
Click to collapse
Ah, sorry I misunderstood what you were saying.
I do not know what rpm.img and tz.zip are for. I did read somewhere in XDA that tz.img is for the "radio" (or transmitter?). But I would suggest to keep those files (tz.img, rpm.img, aboot.img, sbl1.img) at "Kitkat version" because there will be a signature mismatch resulting to "certificate verify" or "security error" - if people want to have a custom recovery.
If people will NOT install a custom recovery (they just want root) then they can use this guide. The device will boot fine without the error messages, since recovery.img is Lollipop non-"bump'd" version (so the signatures match).
It should be possible to make a script that flash kk bootstack, bumped recovery and bumped kernel in a one click process, for a LP rooted.
6ril1 said:
It should be possible to make a script that flash kk bootstack, bumped recovery and bumped kernel in a one click process, for a LP rooted.
Click to expand...
Click to collapse
Yes, that's another way of approaching it. Or maybe create a flashable zip from it. But we will still need to instruct users to extract their Kitkat Image files (I don't think all Image partitions are the same for all variants), that's why I find the manual method (like @autoprime) to be a good approach because I personally find it to be more "universal".
One example: the D858HK does not have cust.img.
So for us to create an all-in-one script, zip, or approach, it would be difficult because of the many variants of the LG G3. Maybe if there were not that many variants, I'm sure skilled people like you can have a universal and convenient solution. For now, I still think that manual flashing is more universal.
topet2k12001 said:
Yes, that's another way of approaching it.
Click to expand...
Click to collapse
; -)
Tz trustzone,rpm ressource power managment, sbl secondary bootloader
https://wiki.linaro.org/Boards/IFC6410
6ril1 said:
; -)
Tz trustzone,rpm ressource power managment, sbl secondary bootloader
https://wiki.linaro.org/Boards/IFC6410
Click to expand...
Click to collapse
So that explains why even if the Lollipop versions are included/flashed, they won't cause an issue of signature mismatch. The Image file that causes a signature mismatch when you flash a "bump'd" file is aboot.img (the Android Bootloader). Which explains also in my experiment (prior to discovering it all and creating a thread) why I was initially able to "fix" my issue, following @autoprime's tutorial, when I flashed aboot.img - however, in exchange I lost "bump" status.
So basically, people will need to flash their Kitkat version of aboot.img and "bump" will still work (and will have custom recovery). That is our hypothesis at this point.
This reminds me: in my how-to guide, there was a user complaining about fast battery drain. Maybe if I advise him to flash the Lollipop version of rpm.img, that would help alleviate the issue. I will do an experiment and if this will succeed, I will update my how-to guide. In your case, for this thread's purpose, you may also do an experiment and create scripts.
Nice teamwork.
I don't know what "trustzone" is though. Will it affect signature mismatches? sbl1.img and rpm.img seem to be self-explanatory.
EDIT:
As mentioned previously, it is very dangerous to flash any of the restricted boot partitions such as sbl1, sbl2, sbl3, aboot or rpm. However it is safe to flash any other partition in order to install custom Linux builds and run them.
Click to expand...
Click to collapse
...do we really want people to touch this?

[Beginners Guide] Unlock & Custom ROM your TF300

I have been asked to port my "Beginners Guide" from the TF700 forum for the TF300. Since both tablets are very similar, that was not too hard to do
If I have missed to update a link specific for the TF300, do let me know please.
And the standard disclaimer: I am not responsible if you misunderstand instructions I give here, if my instructions are wrong, if you forget to charge the battery and the tablet dies halfway through a flash or if your house goes up in flames. YOU DO THIS AT YOUR OWN RISK
These instructions assume that you are on the latest Asus bootloader: 10.6.1.27.5
To determine which bootloader you currently have:
From an "Off" state, boot the tablet with Volume Down and Power into the bootloader menu. Read the small script in the upper left. You'll see
US_epad-10.6.1.27.5-20130801" or similar.
US or WW, JP, CN is your SKU or region
10.6.1.27.5 is your bootloader version
20130801 is the build date (and immaterial in most cases).
First things first:
Backup everything on your tablet you care about to an external microSD or your PC. Don't worry about your apps. You can always install them from the Play Store.
This is just common sense. It is not inherently risky to flash custom ROMs. But something can wrong at any time and you have to be careful. If you are, this is a safe procedure.
Basically the process of flashing a custom ROM on the TF300 involves three steps:
1) Unlock the bootloader using Asus' Unlock tool
2) Install a custom recovery on the tablet
3) Flash a custom ROM of your choice using said custom recovery​
Unlocking the bootloader
Your tablet should be fully charged at this point!
Make sure "USB debugging" is checked in Settings > Developer Options (if you don't see it, go to About Tablet and tap 7 times on Build Number)
Go to Asus website: https://www.asus.com/support/Download/28/1/0/9/8BmzkQ4yoz5WzBrW/32/
Choose "Android" for OS and look for the "Utilities" on the resulting page.
Download the Asus Unlock Tool v7 (not v8! It says v7 is for ICS but it'll work fine on JB - see below)
The tool downloads as a .rar file which is an archive you have to decompress. 7zip is a free and very good Windows tool that will do it for you
On your tablet, in Settings > Security check "Unknown Sources"
Copy the .apk you extracted from the .rar archive to your tablet.
Find the apk in your tablet's file browser, tap it and let it install
Open the app and follow the instructions. You will loose your warranty as soon as you click "I agree".
Update 2/15: Google added another wrinkle: It now checks even sideloaded apps and refuses to install them if they are considered not secure. The Unlock tool seems to fail their test. v8 does not install at all anymore. v7 will install if you allow "less secure apps" in your Google account settings. On the web - not your Google account on the tablet
July 2015: And another wrinkel... It seems to be pretty consistent now that the Unlock Tool hangs on the Google account password step. I suspect something changed on the Google side. It probably doesn't allow the tool to check/compare the password anymore. There have been quite a few security changes lately and the unlock tool never gets updated so I suspect that Google now is blocking access by the tool to it's servers.
The work-around is easy enough: Delete the Google account from the tablet (Settings > Accounts), then run the tool again. If that doesn't do it, do a factory reset from Settings, reboot and during the initial setup establish a WiFi connection but skip the google account setup, then run the tool
Click to expand...
Click to collapse
This can be a 5 Minute operation that goes without a hitch or a very frustrating experience with lots of error messages. There is no definite rhyme or reason for this. For some people it works like a charm, for others it works after 15, 25 or 55 attempts, for some never.... This problem is widely discussed on several forums. Google it if you hit that roadblock.
To check if you are unlocked, boot the tablet and read the tiny script. It should say:
The device is unlocked.
Installing a custom recovery on your tablet
I highly recommend you choose TWRP as your custom recovery. If you want CWM, you are on your own.
To push TWRP to your tablet you need to set up "Fastboot" between your tablet and your PC. Fastboot is a protocol that enables you low level access to your tablet.
Practice/Background
Power down your tablet and disconnect it from the dock
Push and hold the Volume Down key (left side of the rocker) and the Power key until you feel the tablet vibrate twice. Let go when you see the tiny script. Read it and it tells you that your tablet is now in fastboot mode and you will see three icons (I assume again you are on a JB 4.2 bootloader. In older bootloaders you had 4 icons and had to select the USB icon to get into fastboot mode):
RCK - (which should be flashing) is your recovery (the stock recovery at this point, but once TWRP is installed this is one way to get into it)
Android - is your system, selecting it boots you back to into your ROM.
Wipe Data - stay away! Especially with custom software installed never, ever use this option!
To toggle between the three icons use Volume Down, to select one use Volume Up. Try it but do not push Volume Up when the 'Wipe data' icon is flashing!​
Installing ADB and fastboot plus the necessary drivers
For a working ADB/fastboot connection from PC to tablet you need:
a) Asus device drivers – if you connect the tablet to your PC and it's recognized as a portable device you should be ok. If not, download the Asus Sync Utility from their support/downloads site and install it to get the drivers, then uninstall the program from your PC if you don't want it. The drivers will stay.
b) Fastboot and ADB drivers which will be installed if you run the tool below.
Windows Vista, 7, 8, 10:
Download and run this cool little tool [TOOL] [WINDOWS] ADB, Fastboot and Drivers - 15 seconds ADB Installer v1.1 - xda-developers (don't forget to hit the Thanks button)
The tool installs the adb and fastboot.exe to a folder on your C:\ drive (look for adb) and the corresponding drivers. Takes about 15 seconds.
On Windows 8 and 10 you need to turn off the driver verification feature. Here's a great video on how to do it:
https://www.youtube.com/watch?v=afrvSGiMAtk
Or - even better - here's a quick command line toggle to achieve the same (thank you @Jack_Hardin):
Jack_Hardin said:
If you're running W10, you can disable Device Driver Signing without following the procedure in the linked video, but by (more simply) right-clicking on the Start button, selecting Command Prompt (Admin) and then typing:
Code:
BCDEDIT /set nointegritychecks ON
Doing the same with OFF at the end of the string, as easy to guess as it looks, will reenable them.
Click to expand...
Click to collapse
Jack_Hardin said:
Win XP (and all other Win versions if the above does not work for some reason)
I recommend the "ADB Install Tool" mentioned above or the 'Minimal ADB Fastboot Tool': [TOOL]Minimal ADB and Fastboot [7-18-13] - xda-developers
Either works fine.
If you need the drivers, get them here and install manually in Device Manager:[ADB/FB/APX Driver] Universal Naked Driver 0.72 (We dont need no stinking HTC Sync) - xda-developers
Win7 and Win8 users seem to have the best luck wth the drivers sbdags provided here: http://forum.xda-developers.com/showthread.php?t=2646279
It's fine if you want to use his Recovery Install Tool from that thread. But I highly recommend you familiarize yourself with basic fastboot commands! There are lots of tuturials all over the web.
Linux:Check out this site https://code.google.com/p/adb-fastboot-install/
iOS:[GUIDE] Set up ADB and Fastboot on a Mac easily (With Screenshots!) - xda-developers or:
http://htc-one.wonderhowto.com/how-...-mac-os-x-send-commands-your-htc-one-0151178/
The fun begins
Fastboot does not play well with USB 3.0, so use a USB 2.0 port for this. And no hubs and such....
Boot the tablet into fastboot mode and connect it to your computer via the original USB cable
In Windows Explorer navigate to the folder that contains your adb.exe and fastboot.exe
Win 7/8: Shift + right click and select "Open command window here".
For Win XP click here
select 'Run' from the Start menu, type
Code:
cmd
and hit Enter. In the resulting command prompt type
Code:
cd C:\adb\ [I](or whatever the path to your fastboot folder is..)[/I]
In the command window on your PC type:
Code:
fastboot devices
If that command returns a string of numbers and letters, you are good as gold.
Click me: View attachment 3070087
If it returns: "No devices found", fastboot is not working - yet - and you have to troubleshoot.
Getting the correct drivers working can be the hardest part of this exercise. If your computer does not "see" the tablet in fastboot, try to uninstall the existing driver (if any) in Device Manager and manually install the drivers I linked to above. And if Windows does not cooperate at all, PM me and I can hook you up with a Puppy Linux live CD with fastboot/adb set up already.
Let's assume everything is good:
On your computer go here: https://dl.twrp.me/tf300t/
Download the latest version of TWRP.
FYI ONLY: If, for whatever reason, you want to format your data partition:
Formatting /data starting with TWRP 2.7.x and later takes a lot longer than in previous versions (up to 90 minutes). LET IT FINISH. DO NOT INTERRUPT THE FORMATTING.
Rename the file to twrp.blob and place it into the same directory as your fastboot.exe. Note: More recent versions of TWRP download with an .img extension. Leave the extensions as is, rename the first part to watever is easy to type
Again check the connection with
Code:
fastboot devices
If you get the connection, in the command window type:
Code:
fastboot -i 0x0B05 flash recovery twrp.blob
or
Code:
fastboot -i 0x0B05 flash recovery twrp.img
This will flash the recovery to the recovery partition
If it is successful type:
Code:
fastboot reboot
and let the tablet boot up normally.
You may get a dialog in TWRP offering to root the stock rom. You can accept or cancel it - doesn't matter. I assume you are going to install a custom rom and they are rooted anyway.
Create a nandroid
Your almost there! You are now on the stock ROM with a custom recovery installed.
Power the tablet down and boot into the bootloader menu with Volume Down and Power buttons.
With RCK flashing, push Volume Up and you should boot into TWRP. Familiarize yourself with the many options of the touch based interface without executing anything yet. TWRP is very user friendly. You basically cannot do anything of consequence "by accident", so don't be shy.
To create your Nandroid (a full system backup) touch "Backup", leave the default selection as they are and swipe the button to create a nandroid of your current system.
This is a very healthy habit to develop: You always want to have a nandroid of your last working system squared away so that you can do a simple restore if you flash something that does not work, or something goes wrong during a flash. With a working recovery and a good nandroid you are minutes away from a working system if you soft brick your tablet.
Hint:
It's a good idea to have at least one good nandroid on external media. Sooner or later you will format your data partition and if you're like me, you may forget to backup your nandroids in the heat of the moment..
Installing a custom ROM
From here on out it's as easy as downloading the installation file of your custom ROM, booting into TWRP, choosing "Install" and navigating to the zip of the ROM you want to flash.
If you see a "signed" in the zip file name (best_rom_ever_signed.zip), make sure you check "verify zip signature" under the "Install" menu. Some devs sign their ROM zips - a better way to ensure file integrity than md5 sum.
Whatever you decide to flash: READ THE OP of the corresponding thread and make sure you have the correct bootloader and the required recovery installed! I can't stress this enough! If you are not sure, DO NOT FLASH!
Look for the ROMs in the Development section of the XDA forum for this tablet: http://forum.xda-developers.com/transformer-tf300t/development
It is mandatory to do a Factory Wipe in TWRP before installing a custom ROM or going from one ROM base to another (a so called clean install).
If you choose 'Wipe' in TWRP, all you have to do is swipe the button - 'Factory Wipe' is the default selection under the 'Wipe' menu. You will loose your apps, but it will not wipe your /data/media/ folder where your files, pictures, etc live.
If you do this right before flashing the custom ROM, make sure you have the zip file of your custom ROM on your microSD - not on your internal SD where it may get wiped....
Once you installed a custom recovery NEVER EVER UNDER ANY CIRCUMSTANCES - AND I REPEAT: NEVER! - use the 'Wipe Data' option from the bootloader menu or the "Factory Reset" option in Settings > Backup&Restore.
In your custom recovery you have the option to wipe, backup and restore every partition on your tablet selectively or collectively. Any wiping, any backup and any restore of the system, data, recovery or boot partitions MUST be done in your recovery (or in fastboot)!
You can safely use Titanium Backup or Asus Backup for apps and settings, but that's it. For everything else use your recovery.
FREE ADVICE
There are alternative methods to flash a recovery to your device using apps like GooManager (currently not supported anyway), TWRP Manager or Flashify from the Play Store which do it right from your tablet. These apps "save you the trouble" of getting ADB and fastboot set up and working on your PC. These methods still exist and they do work - mostly - and if you have root. But I would not recommend them.
If you are not willing to invest the time to learn the basics about ADB and fastboot (google "adb fastboot xda tutorial") and install the necessary drivers on your PC, you should not be flashing anything to your tablet!
GET ADB AND FASTBOOT WORKING!
Sooner or later you will do something stupid (I have done it and so will you) and ADB/fastboot may save your bacon IF you had it working when you didn't really need it.
Hit the 'Thanks' button and rate the thread 5 stars if this helped you
Click to expand...
Click to collapse
Save it for later
Mine
sbdags said:
@stamatis could we sticky this please.
Brilliant post Bernd :good:
Click to expand...
Click to collapse
Can we make that happen here to @stamatis
Thx Josh
Nice one Bernd! :good::good:
boot sequence
Hi,
Is normal to see three TUX and some phrases at the power on ?
Can I hide it ?
tnkx
Nicola
You mean the penguins?
That's normal I'd you're running a Rom that uses _that's preinit scripts. You can't hide them - why would you?
thank you SO much
I love you!
Wow, I've never had so much trouble rooting a device before! And days ago, I rooted my T700 without any problems. So, I guess I should have expected the hubby's TF300T to be problematic! Recoveries didn't work, I tried multiple ones. Eventually, I had a recovery that didn't recognize any partitions. I used fastboot to erase them all and put the stock ROM back on--wouldn't boot up. This thread was an immense help! I've moved the other recoveries and ROMs into my non-working folder!
Thanks again!
Lynne
Awesome
What a well written guide! I have a decent understanding of fastboot and adb (although minimal experience), and I perfectly understood every step.
My advice to all newbies like me.... Read stuff ALL of the way through (and understand it), BEFORE stepping off in it.
ok im a bit lost... i have rooted both Nexus 7s, nook hd and hd+, a tf101, and a few tv boxes.. so im not sure why this is hanging up... im trying to root and install the TWRP recovery on a tf300... followed the instructions and even have the char string that means... every thing should be good to go.... have checked that the twrp is in the dir of adb... but when i try to push the twrp.blob to the tf300, it just give me.. this error..
c:\adb>fastboot devices
015d14febf64041b fastboot
c:\adb>fastboot -i 0x0B05 flash recovery twrp.blob
sending 'recovery' (6800 KB)...
FAILED (command write failed (Invalid argument))
finished. total time: 0.002s
so.. at this point i not sure what else to trouble shoot... the tablet is in fastboot mode.. adb sees the tablet.. at least that is what the char string confirms.... so any help would be very much appreciated.. just a bit lost on this...
chris
scuzzo said:
ok im a bit lost... i have rooted both Nexus 7s, nook hd and hd+, a tf101, and a few tv boxes.. so im not sure why this is hanging up... im trying to root and install the TWRP recovery on a tf300... followed the instructions and even have the char string that means... every thing should be good to go.... have checked that the twrp is in the dir of adb... but when i try to push the twrp.blob to the tf300, it just give me.. this error..
c:\adb>fastboot devices
015d14febf64041b fastboot
c:\adb>fastboot -i 0x0B05 flash recovery twrp.blob
sending 'recovery' (6800 KB)...
FAILED (command write failed (Invalid argument))
finished. total time: 0.002s
so.. at this point i not sure what else to trouble shoot... the tablet is in fastboot mode.. adb sees the tablet.. at least that is what the char string confirms.... so any help would be very much appreciated.. just a bit lost on this...
chris
Click to expand...
Click to collapse
The bootloader is unlocked yes ?
What is your bootloader version ?
Try a different USB port ?
Thx Josh
lj50036 said:
The bootloader is unlocked yes ?
What is your bootloader version ?
Try a different USB port ?
Thx Josh
Click to expand...
Click to collapse
hello,
bootloader is unlocked or at least it says it is at the boot screen.. "your device is unlocked"..
real time... just swapped ports... its says it pushed the recovery.... so... will continue along this path.... and see how it goes.... i think its good to go... just as you suggested... port swap... cool... i bought this just so i could root it and put the kit kat kis rom on it.... thanks for your help and big ups to OP.... great guide ...
thanks again.!
Nice guide!
I've been wanting to put a custom rom on my transformer for a long time. This guide worked like a charm.
The only problem I had was when I tried to flash TWRP recovery, but switching USB port fixed that problem.
I flashed the latest CM12.1 nightly and it works fine.
Many thanks!
Help please, I'm stuck!
I'm trying to flash recovery,
after typing:
fastboot -i 0x0B05 flash recovery twrp.blob
I got this on tablet screen:
"Starting Fastboot USB download protocol"
for about 25-30 already and nothing happens, any ideas?
thanks
You won't see anything on the tablet screen, but what does the command window say?
Go back, read the guide again, it's all in there....
Sent from my K00C using Tapatalk
berndblb said:
You won't see anything on the tablet screen, but what does the command window say?
The command window didn't say anything, just blinking cursor after my command line
Go back, read the guide again, it's all in there....
Sent from my K00C using Tapatalk
Click to expand...
Click to collapse
Mishka79 said:
I'm trying to flash recovery,
after typing:
fastboot -i 0x0B05 flash recovery twrp.blob
I got this on tablet screen:
"Starting Fastboot USB download protocol"
for about 25-30 already and nothing happens, any ideas?
thanks
Click to expand...
Click to collapse
Thanks,
After writing the question, I've restarted my tablet and did all the steps again.
The second time everything worked as it should. :good:
thanks for your great guide
Really great guide
Amazing guide thanks for the help
Thank you for this good tutorial but I have one question.
I'm a newbie here, here is my dilemma: I've flashed CM android 5.1.1 successfully from stock 4.2. (Thanks for this detailed tutorial), but I lost my root privileges, now I can't use my root apps. How do I apply root to this ROM? My device is an ASUS TF300T. I've tried Kingo Root and King Root but no success.
I would really appreciate your help and inputs.
Cheers!
ANDROIDYER said:
I'm a newbie here, here is my dilemma: I've flashed CM android 5.1.1 successfully from stock 4.2. (Thanks for this detailed tutorial), but I lost my root privileges, now I can't use my root apps. How do I apply root to this ROM? My device is an ASUS TF300T. I've tried Kingo Root and King Root but no success.
I would really appreciate your help and inputs.
Cheers!
Click to expand...
Click to collapse
I have not used CM in quite a while but I think you have to enable root in Developer Options. I think it is not enabled by default.
If hat does not work you can go to Chainfire's website and download the flashable SuperSU and just flash it in recovery
Thanks and a couple of notes on TF300T
Thanks so much for the great guide. My 300TF was nearly bricked due to slowness and freeze-ups. I'd stopped using it. The process worked and am now running KatKiss. Couple of problems and their solutions for anyone who may have the 300TF:
-When trying to "Unlock Bootloader" I kept getting to "enter Google password" but when I did so (correctly) it was not accepted. The solution was to do another factory reset and NOT install google services. Didn't ask for password after that.
-Used fastboot command line to install "twrp.blob" but nothing happened and it timed out. I had to take out other usb connect programs first (in my case "easy-tether" and my LG phone connect app.) After that everything went as per your guide.
Thanks again
Geneg

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