Database Users

[GUIDE] How to unbrick Acer Iconia A500

I just got from a friend an Acer Iconia a500 he says that is bricked.
I tried this method: http://forum.xda-developers.com/showthread.php?t=1572622
But I can't continue because I don't have ADB access, what should I do?.
Thanks for all and God bless you.
EDIT:
I got everything to using the secret APX mode, but now is still everything the same the Android System is still there and not charging and not touchscreen...
Go to the bottom to see how I solved this lol...
Click to expand...
Click to collapse
If your tablet Iconia 500 (ONLY ACER ICONIA A500) went crazy, and present the next symptoms (Yes it has flu...):
-flu
-Android System icon
-Doesn't want to charge (20% / 15% 12%).
-TouchScreen is not responsive.
-Always when you turn it on says Shutting down and never shuts down.
-In case you're using ICS shuts down immediately without even make you see.​
The solution is the next!:
1. Download this file: http://www.4shared.com/archive/zyP91E0C/root-321-V4.html (This is the file to put recovery in case that you don't have it).
2. Extract all the files in any folder, it doesn't matter where you put it.
3. Go to Image Folder and rename the recovery to: anyname.img.
4. Download any of the lastest recoveries for Acer Iconia a500 (it will work believe me lol).
5. Put the recovery in the Image folder (Ex. Iconia/root-3.2.1/Image/) and rename it to recovery.img
6. Now open with Administrator Rights DotNetDetecter.exe
7. Continue, continue and continue.
8. If you have ADB Active just put it and it will install it. (If you don't have it just go to 8.1)
8.1 Shut down the tablet completly, connect your USB Cable *micro* (Tablet-Computer), take a paper clip and put it on reset without release it then press the power button and count until 4 or u4ntil you hear the sound when you plug something into Windows
8.2 Now your tablet is in APX Mode and the Acer Utility should now work.
9. Put your UID with a 0 in front of all the numbers (if you don't have it go to secret step).
10. Now let everything work. After everything is done you should have recovery now.
11. Press down volume and the tablet will take you to the recovery.
12. Download some ROM 3.2 or ICS 4.0.3, install it via recovery.
13. Download this file: http://www.mediafire.com/?9svnvdk982sxrw4
14. Install the version you have choosen via Recovery.
15. Voila! Your tablet is revived right now
Press thanks button if this helped you =D
SECRET STEP TO GET UID (IS NOT SECRET THOUGH... lol)
Just go to USB tools and use USBdeview, and is done... (Remember to stay in APX Mode)
CREDITS:
-Fguy on www.4pda.ru (EC_FLASH FILES)
-timmyDean on XDA (Root-3.2.1-V4 FILES)
-Moscow Desire (XDA Member, if it wasn't for him it couldn't get to see the light)

thanks for the great guide but could you point me in the right direction for the lastest recoveries for Acer Iconia a500 as the links i find dont work
thanks in advance
matthew

mjfaderway said:
thanks for the great guide but could you point me in the right direction for the lastest recoveries for Acer Iconia a500 as the links i find dont work
thanks in advance
matthew
Click to expand...
Click to collapse
Acer Recovery from the Market should have the most recent RA Recovery, and the original GPL compliant CWM recovery.
Or if you already have the original CWM, you can get the most recent RA Recovery here. Just check the threads for the flash files.
http://forum.xda-developers.com/showthread.php?t=1459821
For CWM you will need to go to tegraowners.

Dear Sir
I have same problem with my tablet too for 4 months and I explained that HERE or HERE
and i followed all instruction in these 2 threads
http://forum.xda-developers.com/showthread.php?t=1572622
http://forum.xda-developers.com/showthread.php?p=24531880#post24531880
and I used from ECrom files created by Mr. Fguy ver 4.03-22 and 3.2.1 but my problem is Lasting yet
can you help me?
you had same problem and you know how bad is a bricked tablet in your hands
thank you and GOD bless all of you
[email protected]
[email protected]

darvis said:
Dear Sir
I have same problem with my tablet too for 4 months and I explained that HERE or HERE
and i followed all instruction in these 2 threads
http://forum.xda-developers.com/showthread.php?t=1572622
http://forum.xda-developers.com/showthread.php?p=24531880#post24531880
and I used from ECrom files created by Mr. Fguy ver 4.03-22 and 3.2.1 but my problem is Lasting yet
can you help me?
you had same problem and you know how bad is a bricked tablet in your hands
thank you and GOD bless all of you
[email protected]
[email protected]
Click to expand...
Click to collapse
I don't have the tablet anymore, it was a friend one, I can help you with your big problem because really it was easier than I thought, you can PM me with all the details, and yes the flu is a big problem... =P

Problems with opening up settings to turn on usb debugging
Hi Travisantonio,
I have a question:
Did you have any problems opening up the settings when you were on the black "android system" screen?
My touch screen is completely unresponsive at the moment.

Maybe I didnt read or understand everything but with my tab USB view didnt give me my ID or it wouldnt work. Got into ADX mode but couldnt get things working. Tried ADB to list devices and would never list anything. I heard my computer beep when I would hook it up but couldnt really do or complete anything. I couldnt get the DOTNETDETECTOR (PBJUPRADE_ to work. Tried A500 APX flash utitlity. Tired nvflash and falied. Guess I should list more information but at this point I tried so many things to recover dont remember the order I did things. I originally tried to upgrade to a Rom but all things failed and actually not sure what ever got completed. Only thing I could tell my tab did besides black screen was the power button either was white(some type of one) or orange.

This helped me to recover my bricked Acer 500 tablet after a failed ICS upgrade. The Acer update seemed to go okay, but on reboot it froze at the Acer logo and had an error in the corner. Every reboot or button/reset resulted in this. It would not recover or do anything else. I was able to get the USB device ID /serial number using the USB deview 64 program in the usb folder. There were several entries for the tablet but only one had a usable number (bottom right line at the end). Then the tool wiped the tablet and reloaded 3.2.1 and booted to factory new. Thanks for the instructions and to all the other XDA-ers for the tools. I am now on ICS properly.

Trying to recover a bricked acer a500, I just have a black screen on boot with no boot logo, vibration or letters or words on the screen
trying to enter recovery/update mode doesnt work
Im up to the step where is says put in your UID into the program
Just go to USB tools and use USBdeview, and is done...
Click to expand...
Click to collapse
I did this and found the device but where exactly is the UID located?
looking at other threads, the serial number is the UID however the serial number entry is blank for this device

Joey22688 said:
Trying to recover a bricked acer a500, I just have a black screen on boot with no boot logo, vibration or letters or words on the screen
trying to enter recovery/update mode doesnt work
Im up to the step where is says put in your UID into the program
I did this and found the device but where exactly is the UID located?
looking at other threads, the serial number is the UID however the serial number entry is blank for this device
Click to expand...
Click to collapse
this method is total overkill for your situation....
how did u get yr tab like this???
if u have total black screen - is the power button lite on?????
what bootloader version are u on
have you had a custom recovery on there
to get your cpuid follow the first link to a guide in my signature - you need to follow steps in the guide if you have any probs then post in the guide thread

the previous owner said he tried to install a custom rom and I think it crashed and this is the result
the power light turns on (white)
if I just power it on, the backlight turns on however its just a black screen, nothing else happens
apx mode seems to be the only thing working right now, I thought this method would be my only chance to get the recovery mode working again
I dont know anything else about the tablet, bootloader ect...

Joey22688 said:
the previous owner said he tried to install a custom rom and I think it crashed and this is the result
the power light turns on (white)
if I just power it on, the backlight turns on however its just a black screen, nothing else happens
apx mode seems to be the only thing working right now, I thought this method would be my only chance to get the recovery mode working again
I dont know anything else about the tablet, bootloader ect...
Click to expand...
Click to collapse
ok thats cool, apx mode works!!!
well try this first - using hard reset:
1) Turn off your tablet,
2) Rotation lock on your left;
3) Press Vol Up closest to rotation lock and power on simultaneously
4) As soon as the tablet vibrates you can release the power button and you should start to switch rotation lock left and right till you see
Erasing Userdata...
Erasing Cache...
Vol Up is still pressed;
5) The tablet starts to format
6) Your tablet will be as clean as it can be.
otherwise plan B!!!
do u know whether tab was running HC or ICS?
u need some package files and a flash tool either apxflash or nvflash
if u start the tools and then connect your tab via usb cable to your pc
there are links to guides in my sig
my cpuid guide shows u what u need and where to get it, info about your cpuid too and drivers - altho you wont need to worry too much seeing as youre in apx
civatos guide has all the links to the packages and all the info you need to patch the bootloader, then you can flash one of the ics roms and youre all good!!!
the process is simple enough - but if you get it wrong it can be frustrating as heck!!!!

tried that method, get no vibration, devices just turns on to the black screen like normal
the only problem right now, I cant retrieve the uid
adb
when I type adb devices, nothing shows up
A500 manager
tried to the use the uid retriever tool however it just stays blank, same for the bootloader
it says it detects the A500 in apx mode
usbdevice view
shows no serial number for this device
I see there is a A500 motherboard on ebay (cant link to outside links...)
"Acer Iconia A500 Tablet Replacement Parts - MainBoard - 32GB MB, H6000 001 PBJ20"
"Complete with Android 4.x installed, 32GB memory and ready to install and boot."
could I get that and just replace the whole mobo and it will work fine?

Joey22688 said:
tried that method, get no vibration, devices just turns on to the black screen like normal
the only problem right now, I cant retrieve the uid
Click to expand...
Click to collapse
OK just clarify - black screen, that is, nothing at all displayed AND Power Light ON??
IF u r in apx mode then
U have a couple of options
EUU flash back to HC 3.2.1 or
apxFlash to ICS
Everything you need for doing this is in my cpuid guide link in my sig.
open apxflash tool do not connect your tab Yet
Go as far as the enter apx mode
Now connect your tab to yr pc
Windows should install apx drivers
Once installed. try clicking blue arrow first
If u don't see the do u want to flash window then
You'll need to click on the "enter apx mode " button instead then
Click blue arrow
Hopefully the PC and tab are feeling pretty friendly and decide to take each other on
The tab should flash the bl and install recovery.....u should be good to go from there!!!
EDIT you can try cmd prompt on nvflash folder
Run a500.bat or.bat file that should kick you to bootloader mode
its really important that your screen display something in white letters!!
Entering Acer download mode OR
Entering apx mode
The flash will fail if u don't see something like this. This holds true for all methods
I see there is a A500 motherboard on ebay (cant link to outside links...)
"Acer Iconia A500 Tablet Replacement Parts - MainBoard - 32GB MB, H6000 001 PBJ20"
"Complete with Android 4.x installed, 32GB memory and ready to install and boot."
could I get that and just replace the whole mobo and it will work fine?
Click to expand...
Click to collapse
Wayyyy outta my league m8. Sum1 else will know....

yes, its just a black screen, no vibration, no boot logo, no letters or words on the screen, backlighting for the screen is on, and the power light is on
when I press the blue arrow in a500 apx flash tool it asks me for my SBK, going to that generator site it then asks for my UID which I cant retrieve

Joey22688 said:
yes, its just a black screen, no vibration, no boot logo, no letters or words on the screen, backlighting for the screen is on, and the power light is on
when I press the blue arrow in a500 apx flash tool it asks me for my SBK, going to that generator site it then asks for my UID which I cant retrieve
Click to expand...
Click to collapse
if you do not have your cpu id and
if you do not have access to adb and
you're stuck in apx mode
then things are looking grim.....
the only way to get into your tab without yr cpuid is fastboot
but you need adb working for that
someone else was stuck in apx mode a day or two ago, try a search...maybe...

I'm sorry guys I was a little off of this thread .
I will be glad to help you guys to get your UID or any problem that you have even though I don't have the Tablet anymore.
Thanks for all and God bless you all.
dibb_nz said:
if you do not have your cpu id and
if you do not have access to adb and
you're stuck in apx mode
then things are looking grim.....
the only way to get into your tab without yr cpuid is fastboot
but you need adb working for that
someone else was stuck in apx mode a day or two ago, try a search...maybe...
Click to expand...
Click to collapse
There is no way to fastboot the tablet in that mode, the only way is to get the UID and then decode it and NVFlash the Bootloader after it is done then put ICS or HC and the EC_ROM files and the tablet will be working again.

I'm gonna throw in the towel and just buy a new mobo for cheap, it seems im screwed without the UID and cant retrieve it either
I wish the previous owner would have gotten the UID beforehand
thanx for the all the help though

Joey22688 said:
I'm gonna throw in the towel and just buy a new mobo for cheap, it seems im screwed without the UID and cant retrieve it either
I wish the previous owner would have gotten the UID beforehand
thanx for the all the help though
Click to expand...
Click to collapse
Sent from my A500 using xda premium
Just come across this check here: /sys/firmware/fuse/acer_cpuid

dibb_nz said:
Just come across this check here: /sys/firmware/fuse/acer_cpuid
Click to expand...
Click to collapse
What do I exactly do?
I dont have any access to the devices files and do not have a dump

[Q] Hard Brick D800 - Please Help! At a loss

Any help is appreciated! First some background:
Flashed device to stock using KK 4.4 version d80020c following steps found here http://forum.xda-developers.com/showthread.php?t=2432476. Successfully rooted using directions (and ioroot25) found here https://www.youtube.com/watch?v=HKuedInhdjU&noredirect=1.
Here's where I got into trouble...Downloaded TWRP 2.7 recovery img and flashed via Flashify. Since this step, my D800 has the exact same symptoms found on this thread http://forum.xda-developers.com/showthread.php?t=2582142.
- No download mode (tried many times)
- No recovery (tried many times also)
- Secure booting error
- LG detected as qhsusb_bulk in device manager
- Device is recognized as 15 different drives, one of which contains a folder named image with 79 different files being .B0X files and Microsoft Access Add-in Data files
- Upon restarting, LG logo with secure booting error, then the screen goes black while your phone is still on
I've followed the steps in the thread that matches my G2's symptoms, run ubuntu 13.1 in VM, apply usb filters for my device which is then recognized as either LG Electonics Inc. QHUSB_BULK or Unknown Device 05C6:9006 when running in VM.
Upon running command ls /dev/sd* in VM Ubuntu Terminal, all that is returned is /dev/sda /dev/sda1 /dev/sda2 /dev/sda5 which are the partitions for Ubuntu, no LG.
I've tried to download and update the Qualcomm drivers, device manager tells me that the drivers were recognized, but cannot be installed and do not pass the hash check (Note: PC is running Windows 8.1).
I've spent over 12 hours on this trying to fix this problem, researched and searched everywhere. If I could get ubuntu to recognize the device, I would be able to continue on with the instructions on this thread http://forum.xda-developers.com/showthread.php?t=2582142.
Links for windows 8 qualcomm drivers, suggestions on how to get the device recognized in ubuntu vm, experiences from others in similar situation, or any with experience working with LG to get a repair done if I'm SOL (as in eMMC is fried) would be so helpful right now.
Thank you all!

After flashing recovery did you flash a patched kernel to boot stock kk?
Sent from my LG-D800 using Tapatalk

I had the same, also with a lot of drives etc.
Screen is black but low backlighted?
Then try with pluged USB Cabel in Phone, hold Power button until screen is realy off, then hold the Power Up Button and plug Cabel into PC.
So I got download mode after I tryed many times

I had problems a few weeks ago getting mine to go into Download mode... turned out that the cable I was using was great for charging, but sucked for everything else. Once I switched to a different cable things worked fine and I was able to load D80010c on the device.
I was running D80020c this morning (with the D80010c boot.img to have a custom recovery) and decided to do an update. Since you can't load D80020k if you have the older bootloader I went all the way back to D80010c, updated to D80010o, D80010q, D80020c and finally D80020k. I was able to root that using IOroot and have restored everything back onto my phone.
-Daryel

Thanks so much for the responses! I've tried endlessly to get the device into download mode, and tried a new cable to no avail. Any other suggestions?

The URL you've linked to will help you solve your problem.
So once you power off your device, hold volume down and power till the lg logo shows, then release shortly and hold them again together till the white window with "factory reset appears", you should notice a text behind the white screen it's fine. So right now when you think it's gonna enter recovery mode the screen is gray(not black), now you connect your device to your ubuntu or whichever linux. You will notice the screen repeatelly blinking when linux is trying to automount the partitions. Figure out which device it is according to the messages it throws. (sdc, sdb, sdX)
This way you should proceed according to the instructions on the thread you linked.
d800 partitions are here

Still no luck
bender_007 said:
The URL you've linked to will help you solve your problem.
So once you power off your device, hold volume down and power till the lg logo shows, then release shortly and hold them again together till the white window with "factory reset appears", you should notice a text behind the white screen it's fine. So right now when you think it's gonna enter recovery mode the screen is gray(not black), now you connect your device to your ubuntu or whichever linux. You will notice the screen repeatelly blinking when linux is trying to automount the partitions. Figure out which device it is according to the messages it throws. (sdc, sdb, sdX)
This way you should proceed according to the instructions on the thread you linked.
Click to expand...
Click to collapse
Thanks for your advice.
I got the white screen asking whether or not I want to perform a factory reset. If I choose No, the phone sends me right to the LG Logo with the error screen. If I choose Yes, it does the same thing. If I plug my phone into my computer while on the white screen asking if I want to perform a factory reset, the device isn't recognized and the PC doesn't see it as plugged in or mounted. I'm not sure what you mean by the timing of when I should try to plug in my device. Thanks again for all your help.

Sneaky Elephant said:
Thanks for your advice.
I got the white screen asking whether or not I want to perform a factory reset. If I choose No, the phone sends me right to the LG Logo with the error screen. If I choose Yes, it does the same thing. If I plug my phone into my computer while on the white screen asking if I want to perform a factory reset, the device isn't recognized and the PC doesn't see it as plugged in or mounted. I'm not sure what you mean by the timing of when I should try to plug in my device. Thanks again for all your help.
Click to expand...
Click to collapse
As soon as in the background of the white menu (factory reset) the secure boot appear plug it in. I'm not sure how much usb filter helps you(maybe it does) but try installing ubuntu over WUBI installer so your win remains. Or at least try ubuntu from usb stick. So you can know for sure if it's working.

Hi Sneaky E. I have the same issue you have. I'll be following your thread. If I figure anything out I'll let you know. I am also having an issue getting mine to charge now. Have you tried downgrading your TWRP?

VirtualBox Error
VirtualBox recognizes the device is plugged in, but won't allow me to push the device for use in linux. I keep getting this error message:
Failed to attach the USB device LG Electronics Inc. QHSUSB__BULK to the virtual machine Ubuntu.
USB device 'LG Electronics Inc. QHSUSB__BULK' with UUID {d8db3712-b86c-4257-a87b-275cef04e5a3} is busy with a previous request. Please try again later.
Result Code: E_INVALIDARG (0x80070057)
Component: HostUSBDevice
Interface: IHostUSBDevice {173b4b44-d268-4334-a00d-b6521c9a740a}
Callee: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}
Click to expand...
Click to collapse
I've tried all USB ports, 2.0 and 3.0. I feel like if I can get past this there should be no reason linux can't see the partitions in the phone. Please Help!!!

Ok so thank you for your help so far. I was able to install Linux on a USB drive and ran the commands and pushed appropriate files from there. I pushed all files including recover.img but the phone will not boot into recovery. Please help!
Thank you!

Sneaky Elephant said:
Ok so thank you for your help so far. I was able to install Linux on a USB drive and ran the commands and pushed appropriate files from there. I pushed all files including recover.img but the phone will not boot into recovery. Please help!
Thank you!
Click to expand...
Click to collapse
you are not alone dude. i had the same issue since sunday and i have spent almost 46 hours already trying to restore my LG G2 F320S korean model.
i followed that instruction in linux, everything went well but then I ended up with a phone not going past the LG logo. the screen no longer dims like how it used to with the secure boot fail error. again, it stucked at the LG logo and thats it.
pressing the 3 buttons though for 5 seconds shows a white screen with 3 options and a bar code under.
but all of these options will just take me back to the LG logo.
I went to a phone technician today, and they said the doing a JTAG fix is the only way to resolve the problem because after trying to fix it with linux, it is no longer identified by my PC.
what are your solutions so far?
anyways before this issue came up, i tried to flash TWRP using flashify, it failed. then went back up. tried to update the OS via OTA then thats it.
i home someone could help us out.

ambetdelarosa said:
you are not alone dude. i had the same issue since sunday and i have spent almost 46 hours already trying to restore my LG G2 F320S korean model.
i followed that instruction in linux, everything went well but then I ended up with a phone not going past the LG logo. the screen no longer dims like how it used to with the secure boot fail error. again, it stucked at the LG logo and thats it.
pressing the 3 buttons though for 5 seconds shows a white screen with 3 options and a bar code under.
but all of these options will just take me back to the LG logo.
I went to a phone technician today, and they said the doing a JTAG fix is the only way to resolve the problem because after trying to fix it with linux, it is no longer identified by my PC.
what are your solutions so far?
anyways before this issue came up, i tried to flash TWRP using flashify, it failed. then went back up. tried to update the OS via OTA then thats it.
i home someone could help us out.
Click to expand...
Click to collapse
What are the negatives to doing a JTAG fix?

Sneaky Elephant said:
What are the negatives to doing a JTAG fix?
Click to expand...
Click to collapse
Here is your fix.
follow exactly. LINK

ingoljosh said:
Here is your fix.
follow exactly. LINK
Click to expand...
Click to collapse
Followed steps already, still can't boot into recovery.

Sneaky Elephant said:
Followed steps already, still can't boot into recovery.
Click to expand...
Click to collapse
if your device is insured maybe report it lost and pay deductible and get a new one AND NEVER ROOT AGAIN

linux cant recognizy my lg g2 f320L
Sneaky Elephant said:
Ok so thank you for your help so far. I was able to install Linux on a USB drive and ran the commands and pushed appropriate files from there. I pushed all files including recover.img but the phone will not boot into recovery. Please help!
Thank you!
Click to expand...
Click to collapse
HI Sneaky elephant........bro I am having the same problem with my lg g2(hard bricked) that its not recognised by Ubuntu...it just shows hssusb-hulk.....no partitions to mount.............
in ur next reply u said that issue solve.....
kindly tell me too that how ur issue resolved...........thanks......

dr jam said:
HI Sneaky elephant........bro I am having the same problem with my lg g2(hard bricked) that its not recognised by Ubuntu...it just shows hssusb-hulk.....no partitions to mount.............
in ur next reply u said that issue solve.....
kindly tell me too that how ur issue resolved...........thanks......
Click to expand...
Click to collapse
The same with me - UP

install ur Ubuntu sing VMware....then partitions will appear.........
---------- Post added at 06:48 PM ---------- Previous post was at 06:46 PM ----------
install ur Ubuntu using VMware......then ur mobile will be recognised and partitions will appear.....

Problem with BIOS Tablet Onda v820w

I updated days ago with bad rom the Tablet Onda v820w with windows 10.
I found the correct Bios and now I have the correct file.
But now, I can´t access to windows to update the flash.
How to unbrick this tablet.
Some method to flash the bios outside windows?
The tablet power ON but screen is black, but microusb works It turns on the light of the hub that I have put
The BIOS brand is "Insyde".
If need moore details please ask me.
Very Thanks four your help.
Regards

can you access command prompt (CMD)?
or
can you access the bios and flash from there instead?
only ever flashed bios a few times (on desktop) but ive always done via the bios screens rather than in windows itself.
.

Hi
I can´t access to CMD, because the screen don´t turn on.
Only can put pendrive and Keyboard with MicroUsb hub. (This turn on the light when push the power button)
But I don´t know if tablet have some method to rescue the bios from Bad update.
Thanks

I have similar problem. Please help me anyone. I flash older bios to my v820w and i have now black lcd.
Also i unforunatelly delate windows partitions when flashing Android and now i can acces Android by HDMI output in my TV
is any way to flash bios by Android just like in x98 air 3g?

locoslaw said:
I have similar problem. Please help me anyone. I flash older bios to my v820w and i have now black lcd.
Also i unforunatelly delate windows partitions when flashing Android and now i can acces Android by HDMI output in my TV
is any way to flash bios by Android just like in x98 air 3g?
Click to expand...
Click to collapse
Hi I have the same tablet, when it works it is perfect, but the screen scrambles and the console become Un usable and freezes, i thought that it might just be windows 8.1 so I managed to put windows 10 on it last night but today it is doing the same thing. Could some one offer some advice.

Well...
Hi, I was able to fix a v975i tablet that was completly dead, because of wrong bios update, in my case i use a programmer unit and pro skills to weld. Basically you will flash the bios and download the correct bios , but i had to desolder the chip from the motherboard.

Jiayu S3 3Gb boot loop, i can only access to fastboot

Hello everybody !
I 've spend a long time on this forum and i've found a lot of interesting and useful tips.
I'm in a bad situation today and I can not find a solution so i thank you for the time spent reading this.
Yesterday i've seen an icon on my desktop and i couldn't remember what application it is. I clicked and it was the beginning of an endless nightmare... A huge lag began by making the phone unusable and apps was installing one after one...
When it has calmed down a bit, i tried to install cleaning softwares but i couldn't do anything so I tried to do a factory reset. After that... the malware was still here... So i've decided to clean all by installing a new ROM.
This is a Jiayu S3 4G 5.5 Inch MT6752 Octa Core RAM 3GB 1080P Screen Dual SIM 4G LTE Mobile Phone (invoice description) so i wanted to try the CM12.1 for Jiayu S3 (found on needrom).
My phone was Rooted and TWRP was installed so i've copied the ROM files on a SD card, rebooted in recovery mode, wiped cache, data, dalvic and system and tried to install the new ROM. it was abnormally rapid and now the phone bootloops.
The only thing i can do is activate Fastboot (if i choose normal boot or recovery it continues to bootloop).
I've tried to flash recovery with :
fastboot flash recovery recovery.img
but i get an error message : FAILED (remote : partition 'recovery' not support flash).
Does anyone has ever been in this situation and solved it ?
Thanks for your help !

Hello,
I got exactly the same problem. Did you find a solution?
My phone is in a bootloop, I can only access to the fastboot mode. (fastboot devices show my device).
In this mode, I can't flash my recovery.img:
fastboot flash recovery recovery.img --> partition 'recovery' not support flash.
I can't see my device with the command adb devices (adb devices doesn't show my device, I think because USB debugging is off, but i can't switch it on)
Did someone find a solution ?
Any help would be appreciated, thanks !

That's the behavior of a wrong preloader that was flashed / malware that affected preloader.
Grab a full spftools ROM set, and flash the entire ROM using " upgrade mode"
Cheers
PS: on s3 you need to have both volume buttons pressed, then you can press download on the spft.
PPS: this will destroy all of your data, so back it up first ..

Thanks for your answer.
So, I downloaded latest version of Flash_Tools, but i can't find any complete set for flashing... only recovery.img (I'm searching on needrom.com). Do you have a place to find these?
>PS: on s3 you need to have both volume buttons pressed, then you can press download on the spft.
I think i got another problem: with Flash_Tools, I'm unable to flash anything to my device... There is a special mode to launch, as you explained, but it seems I can't access it... By pressing both up and down volume button, the phone should boot on a special mode ? How can I know if the phone is booted in this mode ? The USB cable must be plugged before/after booting the phone in this mode ?

mick605 said:
Thanks for your answer.
So, I downloaded latest version of Flash_Tools, but i can't find any complete set for flashing... only recovery.img (I'm searching on needrom.com). Do you have a place to find these?
>PS: on s3 you need to have both volume buttons pressed, then you can press download on the spft.
I think i got another problem: with Flash_Tools, I'm unable to flash anything to my device... There is a special mode to launch, as you explained, but it seems I can't access it... By pressing both up and down volume button, the phone should boot on a special mode ? How can I know if the phone is booted in this mode ? The USB cable must be plugged before/after booting the phone in this mode ?
Click to expand...
Click to collapse
There is no special mode, please serach the forum on how to use sptools, i am sure you will find plenty of them.

Sorry for late answer !
Thanks for this advice, i will try as soon as possible and post if it's ok or not.

Hello everybody !
Ok, I got it !
My problem came from the drivers... But not the ADB drivers, the preloader drivers.
In the Windows device manager, when I plugged my phone (previously swithced off), I got a "MT65xx Preloader" device with a warning. Be careful, this item stay 2 or 3 seconds before disappearing ! This driver wasn't installed correctly, that's why Flash Tools didn't worked for me (it didn't see my phone) !
So, I got the driver on the web, by typing "MT65xx Preloader driver", I got the drivers that I installed. This guide gave me the files and a method to install them:
http: //laurentiumihet.ro/sp-flash-tool-mediatek-mt65xx-drivers-download-and-installation-guide-including-bricked-devices/ (can't post links, delete space after http: )
To install the driver, you can set up manually by right clicking on the "MT65xx Preloader" > "Update drivers". Then, browse to the drivers you previously downloaded (a folder containing .inf and .sys files). Windows should detect the driver and install it.
To check if the preloader driver is correctly installed, power off your phone and unplug it, them plug it. Instead of the previous "MT65xx Preloader" entry, you should now see a "MediaTek PreLoader USB VCOM Port" under "Ports (COM & LPT)" (same as before, this item is displayed only 2-3 seconds...).
Now that the preloader driver is correctly installed, Flash Tools works for me. I successfully flashed a new rom I got from needrom.com (a full set, as suggested by superdragonpt), and my phone boots now =)
Thanks all for your answers ! Xehon, hope it will works for you !

Thanks mick605 !
I travel for work so i can't try all the advices on this forum atm.
I'll check this when i get back home and i'll tell you if it's ok
Thanks again !

mick605 said:
Hello everybody !
Ok, I got it !
My problem came from the drivers... But not the ADB drivers, the preloader drivers.
In the Windows device manager, when I plugged my phone (previously swithced off), I got a "MT65xx Preloader" device with a warning. Be careful, this item stay 2 or 3 seconds before disappearing ! This driver wasn't installed correctly, that's why Flash Tools didn't worked for me (it didn't see my phone) !
So, I got the driver on the web, by typing "MT65xx Preloader driver", I got the drivers that I installed. This guide gave me the files and a method to install them:
http: //laurentiumihet.ro/sp-flash-tool-mediatek-mt65xx-drivers-download-and-installation-guide-including-bricked-devices/ (can't post links, delete space after http: )
To install the driver, you can set up manually by right clicking on the "MT65xx Preloader" > "Update drivers". Then, browse to the drivers you previously downloaded (a folder containing .inf and .sys files). Windows should detect the driver and install it.
To check if the preloader driver is correctly installed, power off your phone and unplug it, them plug it. Instead of the previous "MT65xx Preloader" entry, you should now see a "MediaTek PreLoader USB VCOM Port" under "Ports (COM & LPT)" (same as before, this item is displayed only 2-3 seconds...).
Now that the preloader driver is correctly installed, Flash Tools works for me. I successfully flashed a new rom I got from needrom.com (a full set, as suggested by superdragonpt), and my phone boots now =)
Thanks all for your answers ! Xehon, hope it will works for you !
Click to expand...
Click to collapse
First of all hi I'm new in this thread,
I have installed everything correctly but I still have only 3 seconds before my phone showes the the charging icon and disconnects.
Can anybody please help me? I actually have been stuck with this problem for months now and all these months I have been using the samsung galaxy s advance (launched in 2011) on marshmallow.

Tablet lenovo yoga 10 B8000-F not booting

Hi,
I have been successfully running Android 4.4.2 rooted on my tablet Lenovo Yoga for a while (see http://forum.xda-developers.com/showpost.php?p=59609647&postcount=178 ).
Yesterday unfortunately, the tablet is stuck on boot.
Turning it on, it displays LENOVO logo on the screen but then the logo stays there and nothing happens.
(I left the tablet on for more than 15mins, nothing, only LENOVO yoga always displayed on the screen).
Turning it off and connecting the usb cable, the tablet screen wakes immediately up and displays always (no animation!) the battery icon with the red lightning inside.
I can access recovery mode and wiped cache, then rebooted, still same problems.
Any help? What could the causes be?
Thanks a lot.

UPDATE: I tried a factory reset but I problably switched it off before it was completed (the screen was dark - not sure).
Now it boots, it shows LENOVO logo, then the android robot with ERASING... and after a few minutes it reboots and it's stucked in this loop (LENOVO logo -> android ERASING -> reboot)...
How can I fix it?

Can you get a copy of the original ROM and flash to the tablet,using something like this. http://forum.xda-developers.com/showthread.php?p=48915118#post48915118
Maybe this site might be of help if you can get the needed files. http://techbeasts.com/useful-adb-and-fastboot-commands-and-how-to-them/2/

corasman said:
Can you get a copy of the original ROM and flash to the tablet,using something like this. http://forum.xda-developers.com/showthread.php?p=48915118#post48915118
Maybe this site might be of help if you can get the needed files. http://techbeasts.com/useful-adb-and-fastboot-commands-and-how-to-them/2/
Click to expand...
Click to collapse
Thanks for your useful answer!
I managed to download B8000_A422_000_085_140402_WW_WIFI rom but this is a folder (not a flashable zip file via sdcard) that has to be flashed via Smart Phone Flash Tool software.
I tried to use FlashTool, but FlashTool does not recognize my tablet (drivers should be OK) and therefore install the rom or do anything on the tablet
Do you know where to find a flashable zip rom for Lenovo 10 tablet so that I can try to flash it via sdcard?
Cheers.

[.::MDT::.] said:
Thanks for your useful answer!
I managed to download B8000_A422_000_085_140402_WW_WIFI rom but this is a folder (not a flashable zip file via sdcard) that has to be flashed via Smart Phone Flash Tool software.
I tried to use FlashTool, but FlashTool does not recognize my tablet (drivers should be OK) and therefore install the rom or do anything on the tablet
Do you know where to find a flashable zip rom for Lenovo 10 tablet so that I can try to flash it via sdcard?
Cheers.
Click to expand...
Click to collapse
Is this of any help to you. https://aluk4rd.wordpress.com/2014/...lenovo-yoga-tablets-8-and-10-b6000-and-b8000/

corasman said:
Is this of any help to you. https://aluk4rd.wordpress.com/2014/...lenovo-yoga-tablets-8-and-10-b6000-and-b8000/
Click to expand...
Click to collapse
Ah ah I was checking the same website! Thanks!
Keep you posted

Thank you everybody, I managed to install 4.2 Android stock again, then update to 4.4.
A hint if someone will have my same same problem (pink lines but no yellow bar in the flash tool, so the flashing process did not start).
I solved it by pressing once shortly the power button on the tablet (then the yellow lines appeared and the flash process began and completed successfully!).
UPDATE: see this link to switch from Chinese to other language https://forums.lenovo.com/t5/Lynx-M...CION-YOGATABLET-8-10-B6000-B8000/ta-p/1761767

Thanx for guide!!

---------- Post added at 08:34 AM ---------- Previous post was at 08:28 AM ----------
[/COLOR]Bumping an old thread rather than starting a new one, because this is exactly what my tablet started doing. I only use it for reading, so when it first started acting up I tossed it on the shelf and figured I'd fix it later. Now I want to read, and I find myself digging around in here. Apparently I'm to stupid to follow the directions for any type of flash involving my computer SP doesn't show me the scatter file I need in my firmware directory. I'd really love to just toss this onto a micro SD and flash it the old fashioned way! Barring that, some dummy proof instructions. I haven't flashed since my old S5, and this device is even older than that so I should be able to get this done. It's really annoying me that I can't. TIA for any help.

Unfortunately my Lenovo Yoga, after 4 years, died... :'(
See https://forum.xda-developers.com/showpost.php?p=77996238&postcount=61 for details.
If anyone has a solution please let me know, tx a lot!