[HOWTO] Recover from checksum errors - Acer Iconia A500

As I've seen a few people around having some checksum erros, I decided to write a small HOWTO.
!!!
The most important information needed to recover from a bricked device is the UID
If your device is not bricked and you read this thread ensure that you have saved your UID!
!!!
​
Because some people do not read big red text, here it is once again:
GET YOUR UID even if your device is not bricked.
If you need help please contact me with PM or ask for help in this thread.
If your device does not boot anymore it may display the following checksum erros:
"LNX checksum error" - when trying to boot into normal mode
"SOS checksum error" - when trying to boot into recovery (VOL- + Power pressed)
<CASE 1> SOS checksum error
Steps:
- Switch off your device by pressing power for ~8sec
- Switch on your device and boot into normal mode
- If LNX checksum error is displayed, stop here and see <CASE 3>
- Download itsmagic (see this thread). Extract "itsmagic" to the tools folder of android sdk.
- Connect your device to your PC (Windows: drivers can be obtained from Acer website)
- If not already done, get your UID using Method 1 of "How to get the UID"
- If not already done, get a dump of mmcblk0_start (see "How to get a dump of mmcblk0_start")
- In the command window type:
Code:
adb push itsmagic /data/local
adb shell
su -
chmod 755 /data/local/itsmagic
/data/local/itsmagic
exit
- If everything went fine you should see some output of itsmagic
- Reboot and check if you can boot again
- Store your UID and mmcblk0_start to some safe place
Possible reasons for this error
- You tried to install a new recovery without calling itsmagic before
- You have not remove /system/etc/install-recovery.sh
- Your recovery partition is corrupt
<CASE 2> LNX checksum error
Steps:
- Switch off your device by pressing power for ~8sec
- Switch on your device and boot into recovery by pressing VOL- + Power
- If SOS checksum error is displayed, stop here and see <CASE 3>
If you have stock recovery:
- If not already done, get your UID using Method 2 of "How to get the UID"
- Apply an official OTA, see this thread
If you have thor's CWR:
- If not already done, get your UID using Method 1 of "How to get the UID".
- Select "reboot system now"
If you have any other recovery (that does not have itsmagic integrated):
- If not already done, get your UID using Method 1 of "How to get the UID". If Method 1 does not work, try Method 2
- DO NOT apply any official update.zip . Otherwise you will end up in <CASE 3>
- send me a PM or ask for help in this thread.
Possible reasons for this error
- You tried to install install a new kernel / stock update.zip without calling itsmagic (will not occur with thor's CWR)
<CASE 3> SOS and LNX checksum error
- If available, upload the "mmcblk0_start" dump to some file hoster (e.g. dropbox)
- Send me a PM with your UID and a link to "mmcblk0_start"
- If you do not have your UID: DO NOT connect your device to your PC:
- Pray that you are able to recover the UID from a PC the Iconia was already connected once.
- Windows: Try Method 2 of "How to get the UID" but DO NOT connect your device to your PC.
- Linux/Mac: Check old syslogs for messages where your device was connected to your PC (normally some "usb " kernel messages)​
Possible reasons for this error
- You tried to install a new kernel athough you already have a SOS checksum error
- You tried to install a new recovery altough you aleady have a LNX checksum error
How to get the UID
Method 1
- If not already done, follow the instruction "Howto install ADB" below
- In the command shell, type:
Code:
adb devices
and press RETURN
This will output something like this:
Code:
List of devices attached
370014740c00594 device
The number is your UID.
- Save this number somewhere it won't get lost
Method 2
- Connect your device to your PC and ensure that drivers are properly installed (Windows: Can be downloaded from Acer website)
Windows:
Download this tool (download link is nearly at the end of the page):
- Open the tool
- Sort after VendorID
- Find all devices with VendorID = 0502 and ProductID = 3325. Check the "Serial number" column for these devices.
Linux:
Call (as root) and see the iSerial field for Iconia.
Code:
lsusb -v
Mac:
- Should be visible in system profiler. Sadly I don't own a mac. So if anyone can help me out with this?
How to get a dump of mmcblk0_start
- If not already done, follow the instruction "Howto install ADB" below
- In the command shell, type:
Code:
adb shell
su -
dd if=/dev/block/mmcblk0 bs=512 count=13312 of=/sdcard/mmcblk0_start
exit
exit
adb pull /sdcard/mmcblk0_start .
- This will create a file "mmcblk0_start" in the tools folder of your android-sdk.
- Copy this file to some safe place
How to install ADB
1. Download android SDK from here. Windows: Download the .zip file instead of the exe file.
2. Extract android SDK somewhere
3. Open a command shell:
- Windows: Press Winkey+R . Some small window appear. Enter "cmd" and click ok. A black command promt window will open.
- Linux/Mac: Open a terminal window
4. "cd" to the "tools" folder of the android sdk by typing the following in the command shell:
- Windows:
Code:
cd "<path to tools folder>"
Sample:
Code:
cd "c:\android\android-sdk-windows\tools"
- Linux/Mac:
Code:
cd /path/to/tools/folder
5. Ensure that your device is connected, that drivers are installed and that USB debugging is enabled (on Iconia: Settings->Applications->Development->USB Debugging)

reserved for me

Im just asking, in case3 u need dump of mmcblk0_start ,but what if dont have it, only UID?
Should i make dump of mmcblk0_start just in case to be insured that evrything will be ok if smth happens?
Any way thks fo tutorial)

Glebaka said:
Im just asking, in case3 u need dump of mmcblk0_start ,but what if dont have it, only UID?
Should i make dump of mmcblk0_start just in case to be insured that evrything will be ok if smth happens?
Any way thks fo tutorial)
Click to expand...
Click to collapse
Having a dump in <case 3> makes everything easier. But it is not mandatory. Nevertheless it's generally a good idea to backup mmcblk0_start.
btw: thor's CWR will backup mmcblk0_start since version 1.2 if you do a nandroid backup.

sc2k said:
How to get a dump of mmcblk0_start
- If not already done, follow the instruction "Howto install ADB" below
- In the command shell, type:
Code:
adb shell
dd if=/dev/block/mmcblk0 of=dd if=/dev/block/mmcblk0 bs=512 count=13312 of=/sdcard/mmcblk0_start
exit
adb pull /sdcard/mmcblk0_start .
- This will create a file "mmcblk0_start" in the tools folder of your android-sdk.
- Copy this file to some safe place
Click to expand...
Click to collapse
Hi there,
after i typed "dd if=/dev/block/mmcblk0 of=dd if=/dev/block/mmcblk0 bs=512 count=13312 of=/sdcard/mmcblk0_start" in the adb shell i got an invalid argument error:
Code:
if: illegal argument combination or already set
What i should do?

when i get a SOS checksum error and a LNX checksum error,can i copy files from pc to a500 device? how?

dmue said:
Hi there,
after i typed "dd if=/dev/block/mmcblk0 of=dd if=/dev/block/mmcblk0 bs=512 count=13312 of=/sdcard/mmcblk0_start" in the adb shell i got an invalid argument error:
Code:
if: illegal argument combination or already set
What i should do?
Click to expand...
Click to collapse
Sorry, there was a typo. Should be correct now
Thanks for the hint.

kimycai said:
when i get a SOS checksum error and a LNX checksum error,can i copy files from pc to a500 device? how?
Click to expand...
Click to collapse
The procedure for this case is much more complex. If you do something wrong, it is getting even more complicated.
I will not publish details currently, sorry. If you get this error, contact me.
As soon as some tools are finished i will update the OP.
Sent from my HTC Desire using XDA App

sc2k said:
Sorry, there was a typo. Should be correct now
Thanks for the hint.
Click to expand...
Click to collapse
Ah ok, thx.

thank you sc2k!

sc2k said:
The procedure for this case is much more complex. If you do something wrong, it is getting even more complicated.
I will not publish details currently, sorry. If you get this error, contact me.
As soon as some tools are finished i will update the OP.
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
really?
waiting……

Hi
After I typed "dd if=/dev/block/mmcblk0 bs=512 count=13312 of=/sdcard/mmcblk0_start" in adb i got: "dd if=/dev/block/mmcblk0 bs=512 count=13312 of=/sdcard/mmcblk0_start /dev/block/mmcblk0: cannot open for read: Premission denied"
What i done wrong?

Raphaello said:
Hi
After I typed "dd if=/dev/block/mmcblk0 bs=512 count=13312 of=/sdcard/mmcblk0_start" in adb i got: "dd if=/dev/block/mmcblk0 bs=512 count=13312 of=/sdcard/mmcblk0_start /dev/block/mmcblk0: cannot open for read: Premission denied"
What i done wrong?
Click to expand...
Click to collapse
You need to be root
Type
Code:
su -
before.
I will update the guide

Thanks but it's doesn't work yet. I have root access. I tried type "su-" but it is the same message "cannot open for read: Premission denied". I install usb drivers and the others think from guide hmmmm....

Raphaello said:
I tried type "su-" but it is the same message "cannot open for read: Premission denied".
Click to expand...
Click to collapse
Did you type su- or su - (notice the space between su and -)?
Also you'll have to confirm su permissions on the tablet.

I typed "su -" with space between su and -
I have USB debugging turn on
When i type "su -" it say "Premission denied"
I really sorry for problem and thanks you for trying to help me

Is your device rooted? Because it has to be.
And if it's rooted did you notice a superuser app popping up after you run the command.

What a shame, I did not notice a superuser app popping up :/ Now it's ok. Thank You very much. I must learn a lot. Only think was taht I can't pull this file to my computer via "adb pull /sdcard/mmcblk0_start" but i copy it directly from device Now I feel safe.
Thanks a lot guys

Well, actually you should be able to dump directly to adb without copying to device to save some time.
like dd if=/dev/mmcblk0p1 count=X bs=Y
but without specifying of= or using of=-
and don't forget to redirect it to file. like "adb shell "dd if ..." > dump_p1". Not sure it will work fine, but I used it once on another device to dump block device image.

i download the android sdk zip file, but is seems that the "tools" folder doesn't include the adb executable file , how should i do?

Related

Flashing A Recovery Rom..

I have searched this forum multiple times and i can not find my answer so i am posting this hoping someone with some patience will help me.. when i followed these steps.. "III: Flashing a Custom Recovery
Flashing a custom recovery will make your life easier when flashing ROMs in the future.
1. Download this file: Recovery.zip
2. Extract file contents to your \tools\ directory of your Android SDK.
3. Open up a command prompt and go to your tools directory, and execute these commands:
•adb shell mount -o rw,remount /dev/block/mtdblock3 /system
•adb push recovery.img /sdcard
•adb push flash_image /system/bin
•adb shell chmod 755 /system/bin/flash_image
•adb shell flash_image recovery /sdcard/recovery.img
4. Success! You now have a recovery partition installed on your phone. You can access it by running "adb shell reboot recovery" or by powering off your phone, holding "Volume Up + Power On"
It says that what i have typed is not an executible file.. someone please help.
are you 100% sure that you extracted the file out of the zip and not just put the zip into the folder?
yea im sure
Are you typing out each command? or are you pasting them into your terminal? Also, what OS are you running ADB from, and have you had success with it before? Or is the eris your first android device
Also, you did the previous steps first correct? IE: you're ROOTED
there is an easier way posted by i think Zinfab it was something like.
su
adb shell
reboot bootloader
at this point make sure it says fastboot USB on the screen
then in the same window fastboot flash recovery recovery.img (make sure your recovery.img is in the same directory as all your SDK tools)
this worked for me when the method u posted didn't work
where do i type this stuff in at.. i have my phone plugged in usb debug checked i installed the usb driver update it and i have the recovery thing extraced in my tools folder now what do i use my computers command prompt or my phones command prompt
ashertheplague said:
where do i type this stuff in at.. i have my phone plugged in usb debug checked i installed the usb driver update it and i have the recovery thing extraced in my tools folder now what do i use my computers command prompt or my phones command prompt
Click to expand...
Click to collapse
did u set the enviromental variable? its not that important I'm just curious.
if not in command prompt first command would be
(directory to tools)\adb shell
"su"
"Reboot bootloader"
then once its in bootloader
(directory to tools)\"fastboot flash recovery (directory to recovery.img)"
now the quoted sections should be typed exactly as is, without the quotes, but you have to know your own directory.
when i type it in on my phone it says adb not found
whats that
ok my phone now is in fastboot usb mode what do i do know
as suggested, did you set the variable? type fastboot devices to see if its even working correctly, to start.
how do i get out of fastboot usb
Type in the command fastboot flash recovery recovery.img
ok now it says waiting for device
You didn't search that well.
http://forum.xda-developers.com/showthread.php?t=647974
well i went to that forum and it was still giving me problems.. but i got help from spence_moore so its all good
ashertheplague said:
well i went to that forum and it was still giving me problems.. but i got help from spence_moore so its all good
Click to expand...
Click to collapse
What step were you having a problem with? If there is something wrong I would like to fix it.

root Tattoo with Mac

Hey Boys and Girls,
where i can find an manual to root the tattoo with a mac?
sorry, i have search for this, but i cant find information for this
I don't thing that there is a difference.
As soon as you have SDK installed and adb works, the commands are the same.
hi,
i'm also doing all the rooting process from mac, just put the directory contain 'adb' shell into your home/user places and executing it with 'terminal'..
Same here, using a Mac ever since and also using it for Android development. Due to the underlying Unix core of OS X you just have to follow the steps as described for Linux. If it's just adb commands it's the same on every platform anyway.
You might want to add a
Code:
export PATH=${PATH}:/Users/yourusername/android.sdk/tools
to your .bash_profile file in your home folder so you don't have to cd to the SDK tools folder everytime. Happy rooting!
Mod. edit: not dev related, moved to general
Okay thanks for yours answers but i'm a newbie.
the background story is, I want to edit the boot.mp3. Because the startsound is really annoying
So i have download SDK, open the terminal and switch to usb-debbugging mode on my tattoo.
And now? sorry, I'm still missing a few knowledge
thanks for your help
well just use the various adb commands in Terminal Just type in "adb", press enter and you'll get a list of all possible commands. Assuming you've added the path to your sdk tools folder to your bash profile. Otherwise just drag & drop the adb binary from the tools folder onto your Terminal window, et voila.
The most used commands are probably push and pull where you can, well, push stuff to your phone or pull it to your computer.
So if you want to modify the boot.mp3 you would pull the original from the phone to your computer, modify it and push it back, overwriting the original file. In Terminal speak: ;-)
adb pull /system/media/bootscreen/boot.mp3
adb push /path/to/boot.mp3 /system/media/bootscreen/boot.mp3
Please note depending on the ROM you're using the paths may be different. To browse the device via Terminal type in "adb shell" and make a simple "ls" to list the directories, "cd" to change directories etc.
Or if you just want to use another mp3:
adb push /path/to/whatever.mp3 /system/media/bootscreen/boot.mp3
Again, on the Mac you can just drag & drop files onto the Terminal to get their full Unix paths like to your custom mp3
Thanks a lot. i love it its really simple
and now i have load and edit the the boot.mp3. But i can't push it to my tattoo, because i can only read but not write
I have tried to root my phone with "adb root" but it is the message "adbd cannot run as root in production builds"
Terminal: "adb remount", then push again
damn the next bad message "remount failed: Operation not permitted"
You need to root your phone first.
http://forum.xda-developers.com/showthread.php?t=637927
Okay i have executed the instructions. But I've stop at this part:
You should get something like this:
Code:
# id
uid=0(root) gid=1000(shell) groups=1003(graphics),1004(input),1007(log),1011(adb),1015(sdcard_rw),3001(net_bt_admin),3002(net_bt),3003(inet)
uid=0(root) is important.
Click to expand...
Click to collapse
Yes i've root but i'cant download the "su binary" because its doesnt exist.
But its absolute essential to need the "su binary" to only copy the boot.mp3 to my phone? Or there is an other way? What are the commands to push the boot.mp3 back to may tattoo then i'm in the root mode like >> "#".
okay hope you understand me
You need "su" to do root stuff... no other way.
Download the package from 1 click root thread and find "su" there...
http://forum.xda-developers.com/showthread.php?t=644279
now, i have install the su binary. Then i does this command
user:~ user$ /Users/user/android-sdk-mac_86/tools/adb shell
$ /data/local/bin/su
#
Click to expand...
Click to collapse
And now? Is there a comand to push the boot.mp3 back to the phone in this mode >> "#" ?
I have try to open an new terminal window and type
adb push /path/to/boot.mp3 /system/media/bootscreen/boot.mp3
Click to expand...
Click to collapse
but the answer is
failed to copy '/Users/android-sdk-mac_86/boot.mp3' to '/system/media/bootscreen/boot.mp3': Permission denied
Click to expand...
Click to collapse
and adb remount doesnt work to
You also need tattoo-hack.ko file and do insmod tattoo-hack.ko to make /system writable.
Or even better... flash custom amon_ra recovery image and then a custom rom with all this already included.
Mine for example http://forum.xda-developers.com/showthread.php?t=702401
It doesnt have boot sound enabled
Okay thank you very much.
now it was successful

[Guide][NOOB-Friendly] How to share your Nandroid Backup and Modem

As we are having a lot of Jelly Bean leaks lately, a lot of users want to share the Nandroid backup to others but sometimes they make mistakes which ends up in md5 mismatches or some of them don't know how to create a share-able zip.
I have tried to create this guide to enable them in doing so. Hope this will help everyone.
Requirement:
CWM Recovery
7zip, Winrar or any file compressing tool
ADB setup in your PC
Click to expand...
Click to collapse
Once you have applied the OTA and done a factory reset, Follow the process given below:-
If your have ClockworkMod Touch Recovery 6.0.1.2 (Believe me it is easier and better in Touch recovery - Get it from here) follow these:-
In CWM Recovery
Reboot into Recovery => Hold Volume Up + Home + Power buttons together for about 5-7 seconds, release the buttons when you see the recovery menu
Choose -> Backup and Restore
Chooose -> Choose Backup Format (Optional)
Change Backup format to tar (Optional)
Choose -> Create image.zip
This will create an image.zip and an image folder in your Internal Sdcard inside the clockworkmod>backup folder
Copy the image.zip file to your PC, rename it to the software version you are sharing for e.g. GT-I9300-XXXXXXXX. Important do not put spaces in the name.
Upload this zip to whichever Filehosting site you want to share with.
*this image.zip can be flashed in CWM directly without having the need to extract the files inside*
Click to expand...
Click to collapse
If you have ClockworkMod Recovery 5.5 (Get it from here) Follow these:-
In CWM Recovery
Reboot into Recovery => Hold Volume Up + Home + Power buttons together for about 5-7 seconds, release the buttons when you see the recovery menu
Choose -> Backup and Restore
Choose -> Backup (either Internal or External SDcard by default it will backup to ExtSDcar)
Your Backup will now be there inside the clockworkmod>backup folder, Copy this folder to your PC
Zip the Folder and give it a name for e.g. GT-I9300-XXXXXX (Dont use spaces)
Now you can upload this zip to any filehosting service of your choice
Click to expand...
Click to collapse
How to extract the modem:-
For extracting the modem you need to be rooted (If you are not or want to know how go here)
Using ADB (Go here if you want to know how to set up ADB)
Connect your phone to you PC (Please ensure that ADB debugging option is checked in Developer Options)
Type
Code:
adb devices
You will get something like this:
Code:
List of devices attached
XXXXXXXXXXXXXX device
It shows your device is connected via ADB
Type
Code:
adb shell
You will get a output like this:
Code:
C:\adb>adb shell
[email protected]:/ $
Type
Code:
su
You will get:
Code:
su
[email protected]:/ #
(Those who are using Terminal Emulator can start from this step)
Type
Code:
dd if=/dev/block/mmcblk0p7 of=/sdcard/modem.bin bs=4096
You will get
Code:
[email protected]:/ # dd if=/dev/block/mmcblk0p7 of=/sdcard/modem.bin bs=4096
dd if=/dev/block/mmcblk0p7 of=/sdcard/modem.bin bs=4096
8192+0 records in
8192+0 records out
33554432 bytes transferred in 2.892 secs (11602500 bytes/sec)
[email protected]:/ #
Your modem.bin file is copied to the root of your sdcard, copy it to your PC and upload it to the file hosting site of your choice
Click to expand...
Click to collapse
I have tried to write everything to the best of my knowledge. If anyone feels that I have missed something or I have written something wrong please let me know. I will make the changes.
Thanx for this very useful
Sent from my GT-I9300 using Tapatalk 2
anurag549 said:
Thanx for this very useful
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
will be helpful for many ... nice work buddy
Q: When I dump modem I get a modem.bin and its ~30mb, while shipped modems in stock fw is ~12mb, why is this?
Perka said:
Q: When I dump modem I get a modem.bin and its ~30mb, while shipped modems in stock fw is ~12mb, why is this?
Click to expand...
Click to collapse
Well that escapes me..may be someone knowledgeable can shed some light on it..
Sorry..
Maybe the that provided with the firmware is a patch..I know OTA files are patches but can't say much about full firmwares..
I'm trying to do this using the terminal emulator in Rom toolbox and u keep getting permission denied?
(from what I understood we had two ways of doing this correct? A computer and adb or TE, correct?)
Danielhammons1 said:
I'm trying to do this using the terminal emulator in Rom toolbox and u keep getting permission denied?
(from what I understood we had two ways of doing this correct? A computer and adb or TE, correct?)
Click to expand...
Click to collapse
You have to type su in terminal to gain root access. It's just like a standard Linux terminal.

Rooting the TF101 from Linux using PERI zip - no VM

Did this the other night and cant find a guide on here which shows how to root the TF101 from linux/ubuntu/arch, so thought id share. I was on v9.2.1.27
Apologies if this is documented elsewhere somewhere. Props goes to Thing O Doom for the PERI script (which was the source for the adb commands, the recoveryblob and Superuser-3.0.7-efghi-signed.zip) and to Wolf for the orignal exploit.
First grab the android SDK (I cant embed external links yet as im such a noob here, so heres a sort-of link) - developer.android.com/sdk/index.html
Extract the SDK to the directory of your choice. On my boxen, the SDK lives in ~/adt-bundle-linux-x86_64-20130522/sdk
Then grab the wonderful PERI by Thing o Doom and from the zip file you get, extract two files - recoveryblob and superuser zip file to somewhere like /tmp/
Connect your transformer to the USB port and ensure 'enable usb debugging' is set in the developer settings on the TF101. Check that adb can see the tablet, you should see a device ID returned;
Code:
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb devices
Got a device ID back? great, lets push the recovery blob onto the device;
Code:
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb push /tmp/recoveryblob /sdcard/
That should transfer sucessfuly. If not, its time to check up why. If it worked, time to run some commands. Run them one at a time and if any fail, stop and find out why.
Code:
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb shell mv /data/local/tmp /data/local/tmp.bak
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb shell exit
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb shell ln -s /dev/block/mmcblk0p4 /data/local/tmp
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb shell exit
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb reboot
Device should now reboot and look as normal. Wait for it to fully boot up. All worked? Great. Lets run this. now do NOT unplug your computer, USB or TF101 during this process - brick warning!
Code:
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb shell dd if=/sdcard/recoveryblob of=/dev/block/mmcblk0p4
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb shell exit
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb reboot
All worked OK? you should have seen the tablet reboot with a blue bar on the screen and now be back into your OS as normal. Nearly there!
Code:
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb push /tmp/Superuser-3.0.7-efghi-signed.zip /sdcard/
Once completed, reboot the tablet by holding VOL-DOWN and POWER. Keep holding it down until some white text appears on the boot screen, top left. Once you see "Checking for RCK" then let go and press VOLUME-UP. You should now be in the recovery.
From the recovery menu, touch 'wipe' then touch 'wipe cache'. After that completes, touch 'wipe dalvik-cache'. After they are both wiped, go back and touch 'install', select 'install from internal' and look for the Superuser-3.0.7-efghi-signed.zip and install it. Once done, go back and hit reboot
Thats it - you are rooted!
Disclaimer: do this soley at your own risk. I am not responsible if you break anything, kill your hamster, your fluffy cat or your guinea pig.
I'll automate this when I get linux running on my machine again, I just don't exactly know how to make .sh or bash or whatever the linux .bat equivalent scripts work.
If you could help me out I can do this with the .5 release of peri, good guide though c:
I remember attempting this a while back but I believe I couldn't get the sdk working properly..
x
Thing O Doom said:
I'll automate this when I get linux running on my machine again, I just don't exactly know how to make .sh or bash or whatever the linux .bat equivalent scripts work.
If you could help me out I can do this with the .5 release of peri, good guide though c:
I remember attempting this a while back but I believe I couldn't get the sdk working properly..
Click to expand...
Click to collapse
No problem. Have PMd v1
Thanks to both of you, I confirm this works on my tf101 .27. It would be good to have the commands also in the README of one click install.
Hi guys! Thank you for sharing this, I really appreciate it.
I was able to get to the end flawlessly but I have a problem, the touchscreen doesn't work in TWRP so I was wondering if it's really necessary to wipe the cache and if so what other recovery image can I use? I know there is CWM but I found too many in Google that it confuses me.
Thank you very much for your answers!
I have an Asus Slider SL101 with firmware 9.2.1.27, Android 4.0.3
Hi guys. I whipped up this script just for shiggles. Same commands as above, you just don't have to type them.
Unzip the script in the same directory as the recoveryblob and Superuser files, make it executable (right click -> Properties -> Permissions -> Execute), and then you can run it from a terminal with: ./TF101_1Click.sh
Code:
~$ adt-bundle-linux-x86_64-20140702/sdk/platform-tools/adb devices
List of devices attached
0428008242a0b117 device
Code:
~$ ~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb push ~/recoveryblob /sdcard/
bash: /home/xxx/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb: File not found
---------- Post added at 12:18 PM ---------- Previous post was at 12:17 PM ----------
The-Undertaker said:
Code:
~$ adt-bundle-linux-x86_64-20140702/sdk/platform-tools/adb devices
List of devices attached
0428008242a0b117 device
Code:
~$ ~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb push ~/recoveryblob /sdcard/
bash: /home/xxx/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb: File not found
Click to expand...
Click to collapse
Code:
~$ adt-bundle-linux-x86_64-20140702/sdk/platform-tools/adb devices
List of devices attached
428008242a0b117 recovery
Thanks! I used this successfully today.
simonplexus said:
Code:
~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb devices
Click to expand...
Click to collapse
A very minor suggestion. If you can trim the commands to just `adb` instead of `~/adt-bundle-linux-x86_64-20130522/sdk/platform-tools/adb` it will be easier to read and copy. Right now the code box has to be scrolled to see the full command.

[HOW-TO] Lenovo IdeaTab A1000 Rooting

HOW TO ROOT YOUR LENOVO IDEATAB A1000​
<DISCLAIMER>​
By attempting these steps, your warranty will be void. Even worse than that, it might cause crashes, freezes, random explosions, 2nd degree burns, or even turn your beloved tab into $100+ paperweight. What works on mine might not work on yours, so don't attempt if you don't know what you're doing. Do at your own risk. Corrections are welcome. I must admit that I'm not an expert, so any info I posted might be wrong, and I can't offer you much help. I'm not responsible for anything arising from the use of this how-to. I can only wish you good luck.
<WHY ROOT?>​
- Without root or OTA upgrades (at time of writing, Indonesian customers still can't get it), you'll be stuck with ~500MB internal memory. That's annoying.
- You're stuck with the default IO scheduler (cfq) and governor (hybrid, haven't heard that one..)
- You have an incredibly large amount of bloatware you can't get rid of, in that already cramped up internal storage
- Did I mention freedom?
<REQUIREMENTS>​
This method is originally used to root Acer Iconia B1-A71. Somehow I noticed that the two actually has the same chipset, MTK8317 (if it really was relevant ). So I tried the method, and through sheer n00b's luck, it worked like a charm!
Lenovo IdeaPad A1000-G --> 4GB storage, 2G/EDGE. This method haven't been tested on A1000-T/F, different storage cap (16GB, etc.) or other variants, but it should work with slight modification. Screenshots of my specs are attached below. Remember, proceed at your own risk!
A Linux System. Never tried on Windows or Mac. I personally used Linux Mint 15. The source post uses Ubuntu.
working ADB (android-tools-adb). You can get this from synaptics, apt-get, etc. If your system can detect adb devices, you should be fine.
Superuser Binary
Busybox Binary (You can get these two from the links on original post. XDA says noobs can't post links :'( )
ORIGINAL THREAD
<CREDITS>​
XDA Senior Member entonjackson, for writing such a noob-friendly how-to for rooting Acer Iconia B1-A71 and for allowing me to use it for this how-to.
XDA Member alba81, for discovering the method as acknowledged on the original post by entonjackson
All awesome gurus on XDA which I can't mention one by one.
<THE STEPS>​
1. Extract the android sdk to your home folder, e.g. a user named Bob will use like /home/bob
2. Open a terminal
3. Now plug your A1000 into your machine and turn on Debugging Mode (Go into Settings -> Developer Tools, turn on Developer tools, then turn on USB Debugging Mode)
4. Now back at the keyboard of your Linux machine in your terminal type:
Code:
sudo adb devices
The output should be something like:
Code:
123456789ABCDEF device
If it's not, google for it. Somehow your Linux hasn't detected the A1000, although the android sdk for Linux brings all needed drivers with it.
If your device was found, congratulations. The adb connection between your linux machine and your tablet is intact.
5. Now extract the downloaded busybox archive to your home folder, in it there should be a busybox binary. So Bob does:
Code:
sudo ./adb push /home/bob/busybox /data/local/tmp
Code:
sudo ./adb shell
Code:
chmod 755 /data/local/tmp/busybox
6. You should copy the busybox binary into a directory where you can access it as a plain non-root user on the tablet. We need this binary. so we can apply unix tools like telnet, dd, cat, etc. But for now we need it to establish a telnet session between our tablet and our linux machine.
(This point is written on original post. Seems important, but as soon as I finished step 5, I can use those tools)
7. Dial *#*#3646633#*#* to enter Engineer Mode
8. Go to Connectivity -> CDS Information -> Network Utility
9. type the following command:
Code:
/data/local/tmp/busybox telnetd -l /system/bin/sh -p 1234
Advice from original poster: copy and paste it from the browser on your tablet, because dependent on which keyboard app installed, this can be freakin tricky. In the next step you will learn, why it's so important why this command should be correct.
10. Tap on Run. You won't get any feedback, so you will never know if the entered command runs properly or not. That's why you should make sure the command is ok.
Now we have started our telnet server on the tablet.
11. Back in the terminal type:
Code:
/data/local/tmp/busybox telnet 127.0.0.1 1234
If you now get an error like couldn't find busybox or something, then either adb push failed or you forgot to chmod, in step 5
12. Now enter:
Code:
cat /proc/dumchar_info
You should get a bunch of lines, try to find a line containing the partition named android
{..... partition list .....}
android 0x0000000028A00000 0x00000000020E8000 2 /dev/block/mmcblk0p3
{..... partition list .....}
13. We will create a dump of our android system. This is the point where different variants *MIGHT* have different parameters. This step is important, as wrong parameter will result in unmountable image.
Stop. Take a deep breath. If you're not familiar with dd, find a good doc of it. There's a plethora of them.
Get yourself a programmer's calculator (Linux Mint 15 has one built in).
Here's what you'll do :
Convert the hex number on the 3rd column into decimal. In my case (0x20E8000) will yield 34504704. Divide by 4096. The result (8424) goes to the skip parameter.
Convert the hex number on the 2nd column. In my case (0x28A00000) will yield 681574400. Divide by 4096. The result (166400) goes to the count parameter.
So the full dd command will look like :
Code:
dd if=/dev/block/mmcblk0 bs=4096 skip=8424 count=166400 | gzip > /cache/system.img.gz
Do a full sanity check before hitting enter! It will take about 5 minutes.
14. After it's finished we must make the image readable for adb, so we do:
Code:
chmod 777 /cache
and
Code:
chmod 777 /cache/system.img.gz
15. Leave the telnet, and then adb shell session by:
Code:
exit
Code:
exit
16. Now we pull our image by
Code:
sudo adb pull /cache/system.img.gz
wait 1-2 minutes.
It should be then located inside /home/bob. It did for me. If not, do a search . It should be a .gz, extract it right there (or /home/bob if it isn't there)
17. Now we need to modify our system image by adding the tiny but helpful su binary. Extract the SU binary to /home/bob.
18. We create a folder where we will mount our system image to. To create it do:
Code:
sudo mkdir /media/a1000
19. Now we mount it:
Code:
sudo mount -o loop /home/bob/system.img /media/a1000
if it fails, then you entered wrong parameters on step 13
20. Now we copy our SU binary to our mounted system image:
Code:
sudo cp /home/bob/su /media/a1000/bin
21. the su binary needs to have the proper rights to make it usable, so we 'suid' it with:
Code:
sudo chmod 06755 /media/a1000/bin/su
22. Let's unmount our baby by:
Code:
sudo umount /media/a1000
and because bob doesn't like a messed up system, he does:
Code:
sudo rm -rf /media/a1000
because he hopefully won't need it anymore.
23. We have to gzip it again to bring it back to where it belongs to. this we do by:
Code:
cd /home/bob
Code:
gzip /home/bob/system.img
24. So here we are now, we made it to the final Boss fight! The next steps are dangerous and should be performed with caution. We copy back our modified system image, which can brick your device, if you do a mistake! Enter adb shell again :
Code:
sudo adb shell
25. Remove the old boring image:
Code:
rm /cache/system.img.gz
26. Leave adb shell
Code:
exit
27. copy our cool new system image containing the su binary:
Code:
sudo adb push /home/bob/system.img.gz /cache
28. Enter adb shell again
Code:
sudo adb shell
29. Usually the telnet server on the tablet is still running, at least in my case it's been like that. That's why we can directly connect to the telnet server with:
Code:
/data/local/tmp/busybox telnet 127.0.0.1 1234
If this doesn't work, then obviously your telnet server isn't running anymore. So on your tablet if the telnet command is still entered (see step 9), tap on Run again and repeat step 29.
30. Now this is the most dangerous step in this how to (no it wasn't the mkdir one). You can copy following command to make sure everything is fine and paste it into your telnet session on your linux terminal.
<WARNING! SANITY CHECK! MAKE SURE *ALL* THE DD PARAMETERS MATCH THE FIRST DD (STEP 13) OR YOUR A1000 WILL TURN INTO A VERY EXPENSIVE PAPERWEIGHT!>
Code:
[B]/data/local/tmp/busybox zcat /cache/system.img.gz | dd of=/dev/block/mmcblk0 bs=4096 seek=8424 count=166400[/B]
After 1-2 minutes you're done, if your tablet or pc or yourself didn't catch fire, everything's fine.
31. Leave telnet / adb shell by doing
Code:
exit
Code:
exit
32. Reboot your A1000 via ADB, then exit
Code:
sudo adb reboot
Code:
exit
33. Unplug your tablet from PC
34. Install Superuser (No, not SuperSU, cause it won't work!). I personally use Superuser by ChainsDD, from Play Store
35. Be lucky. Your tablet and thus you are now free!
Don't forget to hit thanks, if this helps ​
hi, after step 13 (i double checked the command), i get this error
Code:
/system/bin/sh: can't create /cache/system.img.gz: Permission denied
/dev/block/mmcblk0: cannot open for read: Permission denied
I have the WiFi 4G version
Im too stuck in step 13.....nothing wrong with the script, can u give me a solution?
Im using A1000G also
@ts
Your guide work perfectl, in windows enviroment but mount step still need linux,
I've question are you using DirectoryBinding? Mine always close when playing Real Racing, its very annoying
You have suggeztion or alternative for DirectoryBinding?
Root with Windows ?
Hi,
I am a new member because i bought this tblet but i can't root. I don't have a linux environment, so there is a solution with W8 Pro 64 ?
Thanks a lot for you help,
ulisez said:
hi, after step 13 (i double checked the command), i get this error
Code:
/system/bin/sh: can't create /cache/system.img.gz: Permission denied
/dev/block/mmcblk0: cannot open for read: Permission denied
I have the WiFi 4G version
Click to expand...
Click to collapse
have you chmod-ed the busybox (or is the chmod successful without error)? Try chmod-ing the /cache before attempting step 13. It seems that you still don't have access to the NAND device (mmcblk0). Have you updated firmware via OTA?
artonelico said:
Im too stuck in step 13.....nothing wrong with the script, can u give me a solution?
Im using A1000G also
Click to expand...
Click to collapse
Do you encounter the same error message like ulisez had? Could you post the screenshot of the partition list (the lines after you execute dumchar_info)?
rmage said:
@ts
Your guide work perfectl, in windows enviroment but mount step still need linux,
I've question are you using DirectoryBinding? Mine always close when playing Real Racing, its very annoying
You have suggeztion or alternative for DirectoryBinding?
Click to expand...
Click to collapse
I personally use Link2SD by Bulent Akpinar to link apps to 2nd partition on my SDcard.
Letsar said:
Hi,
I am a new member because i bought this tblet but i can't root. I don't have a linux environment, so there is a solution with W8 Pro 64 ?
Thanks a lot for you help,
Click to expand...
Click to collapse
The original developer who posted the method (entonjackson) plans to integrate the method in the next release his toolkit, the Acer Iconia Toolkit. I think you should check his thread : http://forum.xda-developers.com/showthread.php?t=2240029
sammymaddog said:
have you chmod-ed the busybox (or is the chmod successful without error)? Try chmod-ing the /cache before attempting step 13. It seems that you still don't have access to the NAND device (mmcblk0). Have you updated firmware via OTA?
Do you encounter the same error message like ulisez had? Could you post the screenshot of the partition list (the lines after you execute dumchar_info)?
I personally use Link2SD by Bulent Akpinar to link apps to 2nd partition on my SDcard.
The original developer who posted the method (entonjackson) plans to integrate the method in the next release his toolkit, the Acer Iconia Toolkit. I think you should check his thread : http://forum.xda-developers.com/showthread.php?t=2240029
Click to expand...
Click to collapse
Link2SD doesn't link app data, do you have any option?
yes i had same message with ulyses, by the way im from indonesia too can i contact you through chat client?
oh yeah im using windows 7 and using cmd as a terminal in linux
thx before bro
sammymaddog said:
The original developer who posted the method (entonjackson) plans to integrate the method in the next release his toolkit, the Acer Iconia Toolkit. I think you should check his thread : http://forum.xda-developers.com/showthread.php?t=2240029
Click to expand...
Click to collapse
Ok, i see his toolkit. It's very good. I'll wait
rmage said:
Link2SD doesn't link app data, do you have any option?
Click to expand...
Click to collapse
I'm not sure whether the stock kernel of our devices supports init.d, thus supports CronMod/Data2SD. Lenovo locked our bootloader, and currently there's no way around it. So I personally think, Link2SD method are the best option for now.
Let's give it several months until our dev gurus bring their miracles upon this device
The attached image shows mt6577 Hardware, can u provide the Soc details please
Hi, Can any one upload Lenovo ideatab A1000 system.img
in step 20, it appears you are writing to a /bin directory on the android system. However such a directory is not visible either through shell or the system telnet account.
Do I need to understand something else about android to make sense of this.
regards
vidya
one month gone past but the op seems to be in caves or has bricked the device
STOCK ROM
CAN ANY BODY PROVIDE ME A STOCK ROM OF THIS DEVISE
I HV ROOTED SUCCESSFULLY BY A VERY EASY METHOD
BUT SCREWED UP WHILE UPDATING IT SO PLZ PLZ HELP ME OUT
THE DEVICE BOOTS BUT ALL THE APP CRASHES :crying::crying:
VR.gtmini said:
The attached image shows mt6577 Hardware, can u provide the Soc details please
Click to expand...
Click to collapse
VR.gtmini said:
one month gone past but the op seems to be in caves or has bricked the device
Click to expand...
Click to collapse
sorry to make you wait. I'm a last grader university student, and final project stuffs have got me pinned down. Hope you understand
Actually the SoC is MT8317. For some god-knows reason Mediatek have made this SoC with signatures similar to MT6577. But somehow CPU tweaker correctly detects the SoC (MT8317). Maybe it's the CPU-Z bug?
unknown_world said:
Hi, Can any one upload Lenovo ideatab A1000 system.img
Click to expand...
Click to collapse
zod0070 said:
CAN ANY BODY PROVIDE ME A STOCK ROM OF THIS DEVISE
I HV ROOTED SUCCESSFULLY BY A VERY EASY METHOD
BUT SCREWED UP WHILE UPDATING IT SO PLZ PLZ HELP ME OUT
THE DEVICE BOOTS BUT ALL THE APP CRASHES :crying::crying:
Click to expand...
Click to collapse
I'm uploading the modified .img. Let's pray my old HSPA modem won't catch fire by the morning.
vidyadhara said:
in step 20, it appears you are writing to a /bin directory on the android system. However such a directory is not visible either through shell or the system telnet account.
Do I need to understand something else about android to make sense of this.
regards
vidya
Click to expand...
Click to collapse
I think you got it wrong. The write process does not take place on the device. It's on the loop-mounted .img in /mnt/a1000 on your computer (step 18-19). Cheers!
Here's the ALREADY BUSYBOX-ED .img for Ideapad A1000-G 4GB EDGE version. Hope it helps :
www dropbox com/s/rmpnz7c285t5sqz/system.7z
sammymaddog said:
Here's the ALREADY BUSYBOX-ED .img for Ideapad A1000-G 4GB EDGE version. Hope it helps :
www.dropbox.com/s/rmpnz7c285t5sqz/system.7z
Click to expand...
Click to collapse
Thanks for coming back, could u post the MD5 of the system.7z & system.zip.
Also could u provide simple way/steps to directly flash this .img without extracting existing stock system image
My tab A1000-G
do you have stockROM for lenovo A1000G
I need this :crying:
raffly said:
do you have stockROM for lenovo A1000G
I need this :crying:
Click to expand...
Click to collapse
Don't worry, the above link is a stock Lenovo A1000 G ROM, but with pre-root files having no superuser app. Just extract the .7z file
System.7z MD5: 658CA71AC8A230B244F267513857F9A5

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