Hi everyone
I got the AC100 and tried to root it and install the Gapps (i needed Gmail and Calendar).
I messed around with the adb from Google SDK and i erased the files from "system/apps" by accident
so the device now got stuck on the startup screen (the android logo keeps flashing once per second)
I searched the web alot and found instructions on how to enter recovery mode
so know i have the ac100 conected via USB to my XP machine, and i have installed the nVidia USB recovery driver
(it showed up as APX in the Device Manager once i turned on the recovery mode).
I can get to the restore screen (holding HOME while powering up) and i've tried a few "update.zip" files on a SD card, but i get the exclamation mark in the triangle as soon as i hit "1 - update" and then the device resets.
I have NVFlash downloaded and it sees the device (nvflash --sync displays info the way it should)
Can anyone please help with instructions on how to get my notebook working again?
I'll be pleased with the stock Android, i'd be happy with Cyanogen Mod.
Please help.
Thank you.
PS. sorry if it's the wrong thread, but as i've read the Folio and AC100 are pretty similar.
best option is to just push the relevant partition images using nvflash, no need to use recovery. If you have an update.zip, that should have the files you need. Have a look at the wet-paint wiki or ask on #ac100
Thanks for the reply
I do have an update.zip, but i'm not quite sure how to push it with nvflash.
I've search alot around the forums but haven't found anyone with a problem like this or i couldn't really understant the steps (in some cases, one of the steps was "push the file to the device with nvflash" but i'm quite a beginner and i would need more detailed info.
I'll try the IRC # as well but if anyone can post here a method, i'd be really glad.
Thanks
UPDATE:
Ok, with the help of some people over on #ac100, i managed to download part8.img to partition 8 (which was the apps partition) but now the devices freezes on the TOSHIBA logo screen.
Any advice?
Good news
I finally got it to run. I used the backup partition imgs i found (along with the partition table txt) and rewrote all the partitions with NVFLASH using the rawdevicewrite method described here:
tosh-ac100.wetpaint.com/page/Backup+and+Restore
It's back to stock android right now.
I'll look into installing Gmail and Gtalk later on and MUCH MORE careful
If anyone can point me in the right direction, that would be great.
Happened to me too
Hi there, I had the same problem that yours and I have solved it this way:
Prerequisites:
Tegra2 Drivers 2 abailable
Android SDK in your system
A working ROM (folio mod for example)
How to:
Extract update.zip to a known folder
Power on the folio.
When see toshiba's logo push power button 3 times and then Volume UP
Connect to the computer
Move to android sdk tools (using CMD)
type:
fastboot flash recovery recovery.img (maybe a route is requiered for last one)
fastboot flash boot boot.img
fastboot flash system system.img
put the full update.zip file into SD and do a normal update
I hope this helps.
thanks metuskale
i got my to work as well
cheers
Related
Hi I have no Market to install any applications,it won't install anything through a PC connection and it's in a factory reset state. I did a lot of research and tried to re-install the vending.apk file which controls it through an adb command prompt but it then fails on the permissions. I have rooted the phone but at the moment is useless because I cant get it to install any other rooted applications! Can anyone help me solve my dilemma. I'm not very good when it comes to programming and coding and have learned all I know from forums. So at the moment all my Dell Streak is an oversized mobile phone! Regards, Tris.
You rooted the phone. Did you delete the Market.apk by accident?
In any event, you should be able to get the Market.apk file here. Save it to your MicroSD card and then run it using a file explorer. That should fix your Market problem in the interim, although you would probably do better restoring your ROM.
Tried to install that used 'Astro' all was well but when I run the market it says it stopped unexpectedly and asks me to force close.
Been trying to Restore Rom using this method,only problem is I cant find the fastboot-windows.exe to continue the flash:-
HOW TO RESTORE YOUR STREAK BACK TO FACTORY CONDITION:
1. Download the stock recovery ROM here and the stock official Dell ROM here.
2. Rename the stock official Dell ROM 'Update.pkg' and put it in the root directory on your SD card.
3. Boot Streak in fastboot mode (hold camera button when turning on), press 'Fastboot Mode' button, wait 10 seconds then connect to your PC (must have Dell PC suite installed).
4. Open a command prompt, navigate to the folder where your 'fastboot-windows.exe' is stored.
5. Type 'fastboot-windows.exe -i 0x413c flash recovery c:\recovery.stock.img' . Make sure the .img file is in c:\ directory. The program will now update the recovery image on your Streak.
6. Once the phone reads 'Recovery Done', remove the battery and insert it again.
7. Boot Streak in Recovery mode (hold down vol up and vol down when turning on) and select option 2.
5. Wait till it installs and it'll boot into Android....DONE!
Any ideas why it now force closes and where that fastboot file should come from?
Thanks again.
Questions:
1. You've rooted your streak. What recovery image did you use?
2. Did you go to /system/etc and change "install-recovery.sh" to "install-recovery.sh.bak"?
While the first question is mainly for curiosity, the second question is very important. It tells me whether the recovery image in question 1 actually stuck around or was replaced by the default recovery image.
For best results, look for multi-recovery flasher in the development forum and use that to restore a default recovery image to the Streak instead of doing it manually. It includes all the files you need, including the fastboot file. After that, go to the wiki and download an official ROM image from there.
I have no idea what is causing the force closes, and that is why I'm recommending starting fresh from a stock ROM in the first place.
Thanks for your help, managed to get the job done. All that stuff wasn't necessary but appreciate the quick reply.
First I managed to download a Stock Dell o2-UK 2.2 Rom form the Dell website Here:- http: //cot.ag/fKoFRX
Then I followed another guide I found by changing the filename to 'update.pkg', putting it on the SD cards Root directory and booting into recovery Mode (Hold down both Volume buttons while powering on) selected the install form SD option and just let it do its work! Buzzing!!!
At least I can do this again in the future if things go wrong once more(I HOPE NOT)!! I can't help myself you see,i'm one of those people where the last thing I did just isn't enough!
Once again thanks for the help and maybe I hope this could help someone else who needs a jargon free solution to a fresh stock install.Tris.
In simpler language, your recovery image was a stock one, so you only had to follow the Dell standard procedure for replacing the ROM.
P. S. Use the thanks button if I was of help.
Hi all
first of all I apologize if this is not the right place to put my inquiry in, but I could not find the specific forum for this device.
I have serious problem with this android mobile phone. it is pretty good phone very useful with dual sim function one of them is 3G with WiFi Hotspot but the problem that I have rooted the phone with superoneclick and I have installed a lot of apps in it modifying some language files then when I restart the phone to let the changes take effect then the mobile keep restarting for infinite. Tried to get in to the recovery mode by using Call Button+Volume up+Power but the screen became blank. I spent the whole day searching the the internet to find the solution but with no clue. the problem the device is new and not supported that much in the public forums. could not find Stock Rom. Huawei website and bulletin was not useful.
is there any way to do it through USB or sdcard and How?
thanks in Advance
I am still trying to find a solution...
if you need it, I attached the original recovery dump to this post.
then you just need to get "fastboot" and then (after preparing your device for fastboot):
"fastboot flash recovery recovery.img" (on a command line opened on the same folder where "fastboot" is)
or you can probably do it too on Linux if you prefer. if it is possible, you'll find the way for it on Google.
also, to access fastboot mode is POWER+VOL_DOWN (not volume up or a 3 key combination) and recovery is POWER+HOME (which you probably already know).
the system dump I can't send because I never made a dump.img of it and I am currently having a bootloop problem (I'll probably have to flash the original rom from a friend).
bl88drg said:
if you need it, I attached the original recovery dump to this post.
then you just need to get "fastboot" and then (after preparing your device for fastboot):
"fastboot flash recovery recovery.img" (on a command line opened on the same folder where "fastboot" is)
or you can probably do it too on Linux if you prefer. if it is possible, you'll find the way for it on Google.
also, to access fastboot mode is POWER+VOL_DOWN (not volume up or a 3 key combination) and recovery is POWER+HOME (which you probably already know).
the system dump I can't send because I never made a dump.img of it and I am currently having a bootloop problem (I'll probably have to flash the original rom from a friend).
Click to expand...
Click to collapse
Hi, Can you help me and upload the boot img. I accidentally erase the boot partition.
Many Thanks.
I tried to root my me302kl by following the first post described in this thread, but it seems I've bricked my tablet
http://forum.xda-developers.com/showthread.php?t=2601837
I have the LTE version, unlocked the bootloader using the apk from Asus, and followed the fastboot method in the first post, and now I'm stuck at the Asus logo on startup. I'm trying to factory reset by using the update download from the Asus website, but when i try
fastboot erase cache
fastboot erase system
fastboot flash update US_ME302C-V4.7.3-0-ota-user.zip
it fails with this:
writing 'update'...
FAILED (remote: partition table doesn't exist)
Then I tried following perpe's advice but both methods did not work
Download the update zip for your device and sku from ASUS. Unpack it once, there should be a second zip, try to flash it with
fastboot update name-of-your.zip
if this doesn't wotk, then copy the update zip to an external sd card. Your sd card should be formated in far32. Place the card into the tablets sd card. Press Volume UP + Power to boot it into the bootloader, it should flash it automatically, if not look if yor bootloader has a menu entry "sd download..." select it with the volume keys and power.
Click to expand...
Click to collapse
When booting into recovery mode, I get the dead android robot icon, regardless of whether the .zip file is on the SD card or not. I've also tried making a system.img file out of the system folder from the extracted zip file and flashing that with fastboot flash system system.img and fastboot flash boot boot.img, but that didn't work either.
Any kind soul have advice on how to make use of the official Asus OTA .zip file, or perhaps be able to supply some .img backups for me to make use of?
EDIT
Found out that to get the recovery menu to show up, you have to hold the power button and press volume up. I thought that the menu would show up automatically so I got confused. ADB sideloaded the Asus OTA .zip and everything is back to normal
Hello
How to flash oryginal soft on this tablet. Can you help with this ?
I tried SDK and wiped all system but now i cannot flash the system. How should i do it ?
I have firmware fros ASUS page and now what?
I tried fastboot flash update... but i have measege that unknown partition and cannot determinate image file name. What im doing wrong?
Thanks!
Lenino83 said:
Hello
How to flash oryginal soft on this tablet. Can you help with this ?
I tried SDK and wiped all system but now i cannot flash the system. How should i do it ?
I have firmware fros ASUS page and now what?
I tried fastboot flash update... but i have measege that unknown partition and cannot determinate image file name. What im doing wrong?
Thanks!
Click to expand...
Click to collapse
download the OTA zip from the asus website
unzip once, you should have another zip
power on the tablet while holding volume up to boot into recovery mode
after the android robot shows up, hold volume up and press the power button to get the recovery menu to show
install the zip using adb sideload
using adb sideload will differ depending on what OS you're using. you can google to find out more specific instructions for that because it's a little more work to get it for windows. for OSX if you have homebrew, you can just 'brew install android' and it will install all the android tools for you.
once you have adb installed, in the terminal type 'adb sideload pathname_of_zip.zip' and it will restore your device to factory settings
I had the same problem and your trick saved me from sending it back. I am not sure if i would have send it back as I have yet to brick something since I am playing with android back in the days of Viewsonic gtablet. We are stuck with 4.2.
Sent from my T0LTE using Tapatalk
help
tkuichooseyou said:
Found out that to get the recovery menu to show up, you have to hold the power button and press volume up. I thought that the menu would show up automatically so I got confused. ADB sideloaded the Asus OTA .zip and everything is back to normal
Click to expand...
Click to collapse
hello
got like the same problem.. dead robot, no boot, in recovery does not want to update from ota file.
Can u explain please how to ADB sideload ota.zip?
What I need, drivers and step by step?
I tried but I get no device in adb
Thank you:crying:
ionratiu2000 said:
hello
got like the same problem.. dead robot, no boot, in recovery does not want to update from ota file.
Can u explain please how to ADB sideload ota.zip?
What I need, drivers and step by step?
I tried but I get no device in adb
Thank you:crying:
Click to expand...
Click to collapse
You have to download adb or android sdk, or google how to install adb. Once you have installed the adb, hold the power button, and either Volume UP or down to put tablet into bootlfash recovery mode. Once you have it in recovery mode, push volume up or down to get into true recovery mode.
There you would see adb sideload.
Download US or WWW files from Asus website, and unzip the file into ADB directory or whatever path. then type adb sideload name of the file.
Please read the 1st post by OP on this thread twice or three times, and it tells you how to get your tablet back from brink.
back
rob_z11 said:
You have to download adb or android sdk, or google how to install adb. Once you have installed the adb, hold the power button, and either Volume UP or down to put tablet into bootlfash recovery mode. Once you have it in recovery mode, push volume up or down to get into true recovery mode.
There you would see adb sideload.
Download US or WWW files from Asus website, and unzip the file into ADB directory or whatever path. then type adb sideload name of the file.
Please read the 1st post by OP on this thread twice or three times, and it tells you how to get your tablet back from brink.
Click to expand...
Click to collapse
Got it. Done! the tablet is running again, but I encounter another issue
I have no permission to write internal sd.
I cant touch internal, some apps that require writing don't work (play store, camera, etc) I cant root, unlock or do anything that require w permissions.
Any way to fix that?
Or I have to wait for a CWM and rom image ?
ionratiu2000 said:
Got it. Done! the tablet is running again, but I encounter another issue
I have no permission to write internal sd.
I cant touch internal, some apps that require writing don't work (play store, camera, etc) I cant root, unlock or do anything that require w permissions.
Any way to fix that?
Or I have to wait for a CWM and rom image ?
Click to expand...
Click to collapse
You can download king's root or something which is a window app, and it does give your tablet root. I am not exactly sure about the name, but would let you know once I have access to my laptop.
Sent from my T0LTE using Tapatalk
ASUS MEMO PAD FHD10 ME302KL frozen logo screen
I have problem with my asus memo pad 10. It just shows asus logo startup screen and nothing more and it have no reaction with anything I do.
Please help!
I can't boot into recovery mode, but there is no problem to boot into fastboot mode!
Could anyone provide stock recovery file or link? Then I can flash recovery and do the adb sideload.
Thanks!!
sorry for my english guys,
i have asus ME301T tablet, but now i can't start, only asus logo shown, then everything stop
i can't get recovery with START+VOL DOWN too
any solutions for dumb newcomer?
petr.mostyn said:
sorry for my english guys,
i have asus ME301T tablet, but now i can't start, only asus logo shown, then everything stop
i can't get recovery with START+VOL DOWN too
any solutions for dumb newcomer?
Click to expand...
Click to collapse
You're not dumb. I don't know anything about this tablet but check to see if you find solutions here.
vanessaem said:
You're not dumb. I don't know anything about this tablet but check to see if you find solutions here.
Click to expand...
Click to collapse
I agree with vanessaem.... You are not dumb at all, just a newbie. We all started out as a newbie ourselves
I just read on the forums for your device that there is a physical "Reset" button near the SD Card slot. Can you please try to stick a paperclip or pin into that hole and hold it down until the tablet reboots? I also read that these instructions may be in the manual as well.
If all else fails you can restore the tablet to defaults. I also did a quick search and came upwith the easy steps to restore it. These steps are from another forum so I will quote them since this is not my work.
I've only had this tablet a few hours, but managed to get to a point where it wouldn't boot pretty soon after rooting it. So after trying everything to get it up and running I finally managed it with ADB and fastboot, also it took from Android 4.1.1 to 4.2.1 - so here is what I did after reading various forums of problems with other Asus devices and soft-bricking other Android devices in the past - hopefully it might help someone one day.
You will need to install the Asus ADB drivers before following the steps below, if you haven't installed them you can get them here
1. Download and install Lightweight ADB and fastboot installer here from XDA
2. Create a folder called 'Fastboot' on your C: drive (it can actually be called anything but the prompts below refer to a folder with this name)
3. Download the CarePackage.zip file here and unzip the contents to C:\Fastboot, there are 4 files
4. Download your chosen firmware from the Asus web site - extract the zip file to reveal another zip, extract the second zip file, copy the 'blob' file to the Fastboot folder, there will now be 5 files in your fastboot folder
5. Reboot tablet, holding volume down, select the USB option (3rd icon) using volume down to cycle through icons and volume up to select and connect it to your PC using the USB cable
5. Run the Lightweight ADB and fastboot installer which will open the command line, enter the following commands;
c:\Fastboot
fastboot devices
fastboot -i 0x0B05 flash system blob
6. The following will now be displayed in the command line screen;
sending 'system' <1062567 KB> (the actual size will vary depending on the firmware selected) Also a blue bar will appear on your tablet screen showing the progress. It takes around 3-4 minutes to send the system files.
writing 'system' will then be displayed, this will take a further 3-4 minutes.
Once the files have have been sent and written the command screen will display something similar to;
finished. total time: 444.226s
7. Unplug the tablet and reboot it using the power button, you'll have a fresh install, all data, root etc will be lost.
For anyone who is struggling to recover their tablet or just actually update it I hope this helps
Click to expand...
Click to collapse
timmytim said:
I agree with vanessaem.... You are not dumb at all, just a newbie. We all started out as a newbie ourselves
I just read on the forums for your device that there is a physical "Reset" button near the SD Card slot. Can you please try to stick a paperclip or pin into that hole and hold it down until the tablet reboots? I also read that these instructions may be in the manual as well.
If all else fails you can restore the tablet to defaults. I also did a quick search and came upwith the easy steps to restore it. These steps are from another forum so I will quote them since this is not my work.
Click to expand...
Click to collapse
thanks for all advices, but i think this is a SERIOUS problem ..
i can't do fastboot, can't connect PC-ANDROID or vice versa
my android device has now only two modes / off or stoned when asus logo appears
RECOVERY twrp non reachable!
Hi all!!
This is for all the people who managed to softbrick (or hardbrick) their Lenovo Tab 3 8' (TB3-850F) tablets!
All you will need link, at the end of the post. I don't know for how long it will be up, but you can use it for now.
By the way.... Should you find something useful here... please hit the thanks button in the end
A. Unbrick
This requires flashing a clean stock rom. You will need:
a. stock rom for the TB3-850F (Google is you friend )
b. Sp Flashtool (you can download from their official site). From there, also download the MediaTek USB VCOM drivers and Driver Auto Installer v1.1236.00 (or any latest version).
Steps:
1. Install the windows drivers you downloaded
Note : If you encounter problems installing Windows drivers in Windows 10, google how to install unsigned drivers in Win10
2. Open the folder you extracted SP Flashtool and run it as administrator.
3. Unzip the rom file you downloaded.
4. Inside the folder of your unzipped rom file, look for a file similar to XXXXXXXXXX_scatter_file.txt
5. Load this in the SP Flashtool (click downlad tab, then scatter loading, load this file in there. It should load your rom you will see some colours, etc...
The tricky part:
Assuming you have correctly installed the drivers:
1. turn off the device (well if bricked it is turned off all ready) just make sure, and in SP Flashtool click options and 'with battery'.
2. Click the green download button on SP Flashtool.
3. Hold down the Vol down key on your device and connect it to a usb port.
4. If you see a red line and continue to yellow, all is probably good! Don't let go of the vol - button until yellow line reaches 100%
B. Root and TWRP recovery
This requires that you have or download:
a. platform tools (adb and fastboot)
b. a twrp.img (image file) for the lenovo TB3-850F copied to external SD Card and platform tools folder (google is... useful )
c. latest supersu.zip (flashable) copied to an external SD CARD
d. busybox.apk
Steps:
1. Grab tablet, go to settings ---> about tablet ---> click version number 7 times to enable developer options
2. From settings again click developer options and enable OEM Unlocking and usb debugging
3. Navigate in the platform tools folder. While holding SHIFT right click and select open commandline here (or similar)
4. Connect tablet to PC and in the command line issue: adb devices
If a weird number shows up and says device on the left you are all good to continue.
5. Now on the command prompt again issue: adb reboot bootloader
Your tablet should now reboot to fastboot (big Android, laying down)
6. Issue command: fastboot oem unlock (also check tablet screen for confirmation)
Wait a little bit and reboot your tablet. (should work with holding the power key down for a little longer than 10 seconds. If not hold down volume key and power button for the same amount of time - tested and working)
**At this point it is ESSENTIAL to leave the tablet to fully boot. The bootloader unlock triggers a FACTORY RESET which you must leave to complete and set up your tablet from the beginning.
** It is also ESSENTIAL to complete the boot and set up cycle because, after the automatic factory reset you will need to RE-ENABLE developer options and usb debugging. Once you are done continue to 7.
7. In the platform tools folder copy the twrp.img (you should have downloaded earlier, check upwards... )
8. Open the command line again and type:
a. adb reboot bootloader
b. fastboot boot twrp.img
** This will load up TWRP recovery only for this boot time.
****BE EXTRA CAUTIUS TO -NOT- ALLOW twrp to make modifications. Essential! Should you do otherwise go back to how to unbrick your tablet.
9. Choose install, and install supersu.zip.
10. Choose reboot to system and allow complete boot cycle! Essential!
11. Your tablet should now be rooted. However to succesfully flash the twrp recovery you need to have Busybox installed. Download as .apk and install it (at the time of writing this I believe Busybox 54 is the latest version).
12. Once installed back to the windows terminal and issue:
a. adb reboot bootloader
b. fastboot boot twrp.img
ONCE AGAIN - DO -NOT- ALLOW twrp to make modifications!!!!!
13. From you external SD Card install twrp.img, select recovery when prompted.
14. Reboot to system and enjoy!!!!
Note : Install an app that makes it easy to boot to recovery. (I personally use root essentials - Trying the combination keys did nothing for me, or just poped up the chinese options menu. That does not mean the recovery has not been installed correctly. Booting to recovery from rootessential menu, boots straight to twrp)
All you will need and credits:
https://drive.google.com/drive/fold...ourcekey=0-SDvJaXtWWk-TY9B53ct8dw&usp=sharing (thanks button, thanks button, thanks button!!! )
Results:
(it is in Greek, but you get the idea )
Hope I have helped! Happy playing with the commands and whole process! :good:
Lastly, if you get stuck at any point, you can either use this thread or PM me for further advice, explanation and/or any kind of assistance.
Note: Special thanks to @MotoJunkie01 for actually taking the time to further help people on this thread, as unfortunately I do not currently have the time to do so myself. It is worth checking out @MotoJunkie01 's threads also. There, you can find very useful and updated information.
r&xp said:
Hi all!!
This is for all the people who managed to softbrick (or hardbrick) their Lenovo Tab 3 8' (TB3-850F) tablets!
If you find it useful, just hit thanks in the end
A. Unbrick
This requires flashing a clean stock rom. You will need:
a. stock rom for the TB3-850F (Google is you friend )
b. Sp Flashtool (you can download from their official site). From there, also download the MediaTek USB VCOM drivers and Driver Auto Installer v1.1236.00
Steps:
1. Install the windows drivers you downloaded
2. Open the folder you extracted SP Flashtool and run it as administrator.
4. Unzip the rom file you downloaded.
4. Inside the folder of your unzipped rom file, look for a file similar to XXXXXXXXXX_scatter_file.txt
5. Load this in the SP Flashtool (click downlad tab, then scatter loading, load this file in there. It should load your rom you will see some colours, etc...
The tricky part:
Assuming you have correctly installed the drivers:
1. turn off the device (well if bricked it is turned off all ready) just make sure, and in SP Flashtool click options and 'with battery'.
2. Click the green download button on SP Flashtool.
3. Hold down the Vol down key on your device and connect it to a usb port.
4. If you see a red line and continue to yellow, all is probably good! Don't let go of the vol - button until yellow line reaches 100%
B. Root and TWRP recovery
This requires that you have or download:
a. platform tools (adb and fastboot)
b. a twrp.img (image file) for the lenovo TB3-850F copied to external SD Card and platform tools folder (google is... useful )
c. latest supersu.zip (flashable) copied to an external SD CARD
d. busybox.apk
Steps:
1. Grab tablet, go to settings ---> about tablet ---> click version number 7 times to enable developer options
2. From settings again click developer options and enable OEM Unlocking and usb debugging
3. Navigate in the platform tools folder. While holding SHIFT right click and select open commandline here (or similar)
4. Connect tablet to PC and in the command line issue: adb devices
If a weird number shows up and says device on the left you are all good to continue.
5. Now on the command prompt again issue: adb reboot bootloader
Your tablet should now reboot to fastboot (big Android, laying down)
6. Issue command: fastboot oem unlock (also check tablet screen for confirmation)
Wait a little bit and reboot your tablet.
**At this point it is ESSENTIAL to leave the tablet to fully boot. The bootloader unlock triggers a FACTORY RESET which you must leave to complete and set up your tablet from the beginning.
** It is also ESSENTIAL to complete the boot and set up cycle because, after the automatic factory reset you will need to RE-ENABLE developer options and usb debugging. Once you are done continue to 7.
7. In the platform tools folder copy the twrp.img (you should have downloaded earlier, check upwards... )
8. Open the command line again and type:
a.adb reboot bootloader
b.fastboot boot twrp.img
** This will load up TWRP recovery only for this boot time.
****BE EXTRA CAUTIUS TO -NOT- ALLOW twrp to make modifications. Essential! Should you do otherwise go back to how to unbrick your tablet.
9. Choose install, and install supersu.zip.
10.Choose reboot to system and allow complete boot cycle! Essential!
11.Your tablet should now be rooted. However to succesfully flash the twrp recovery you need to have Busybox installed. Download as .apk and install it (at the time of writing this I believe Busybox 54 is the latest version.
12.Once installed back to the windows terminal and issue:
a.adb reboot bootloader
b.fastboot boot twrp.img
ONCE AGAIN - DO -NOT- ALLOW twrp to make modifications!!!!!
13. From you external SD Card install twrp.img, select recovery when prompted.
14. Reboot to system and enjoy!!!!
Note 1: Install an app that makes it easy to boot to recovery. (I personally use root essentials - Trying the combination keys did nothing for me, or just poped up the chinese options menu. That does not mean the recovery has not been installed correctly. Booting to recovery from rootessential menu, boots straight to twrp)
Note 2: If you encounter problems installing Windows drivers in Windows 10, google how to install unsigned drivers in Win10
I apologize for not being able to post links, but I believe the required software is not particularly hard to find.
Hope I have helped! Happy playing with the commands and whole process! I will continue to help as much as I can :good:
Click to expand...
Click to collapse
Good guide. This tablet has temperamental steps involved with custom recovery and root. This guide gives a good outline of those steps. Here is a link to my thread for Stock Android 6.0 firmware for this tablet for members who need a stock ROM.
https://forum.xda-developers.com/android/general/rom-lenovo-tab-3-8-tb3-850f-android-6-0-t3593043
---------- Post added at 09:08 PM ---------- Previous post was at 09:06 PM ----------
Sorry, didn't mean to quote the entire OP....
MotoJunkie01 said:
Good guide. This tablet has temperamental steps involved with custom recovery and root. This guide gives a good outline of those steps. Here is a link to my thread for Stock Android 6.0 firmware for this tablet for members who need a stock ROM.
https://forum.xda-developers.com/android/general/rom-lenovo-tab-3-8-tb3-850f-android-6-0-t3593043
---------- Post added at 09:08 PM ---------- Previous post was at 09:06 PM ----------
Sorry, didn't mean to quote the entire OP....
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Thank you, I appreciate your comment. I was really enthusiastic to read that you are working on a pure Stock Android 6.0 ROM for this device! Will definitely be waiting for that!
Thank you again!
r&xp said:
Thank you, I appreciate your comment. I was really enthusiastic to read that you are working on a pure Stock Android 6.0 ROM for this device! Will definitely be waiting for that!
Thank you again!
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Thank you for the encouragement. I am in hopes that we can eventually get a dedicated device forum for the tb3-850f. I truly believe this tablet has the potential for plenty of future development.
@r&xp I love you so much, I was in the same predicament as you and you helped get my tablet running again. Just wanted to mention, I had to hold volume down when plugging in the USB for the SPFT step instead of volume up. THANK YOU AGAAAAAAAAAAIN <3
Rimmir said:
@r&xp I love you so much, I was in the same predicament as you and you helped get my tablet running again. Just wanted to mention, I had to hold volume down when plugging in the USB for the SPFT step instead of volume up. THANK YOU AGAAAAAAAAAAIN <3
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Thanks for the comment!!! :silly:
Glad it worked for you. Isn' t it like a really good feeling when you actually see your bricked device boot correctly for the first time after you had almost deemed it unusable???
(also... a... small request... could you please click on that thingy... you know... that ehhh... thanks button??? :angel::angel:)
Just an update, since damaging my TB3-850F, I have since ordered another unit from Office Depot which is due to be delivered Monday or Tuesday. Once it arrives, I'll finish my TWRP flashable stock 6.0 ROM for this device and start back on the modified stock ROM.
r&xp said:
Thanks for the comment!!! :silly:
Glad it worked for you. Isn' t it like a really good feeling when you actually see your bricked device boot correctly for the first time after you had almost deemed it unusable???
(also... a... small request... could you please click on that thingy... you know... that ehhh... thanks button??? :angel::angel:)
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Lol yessir, thanked!
MotoJunkie01 said:
Just an update, since damaging my TB3-850F, I have since ordered another unit from Office Depot which is due to be delivered Monday or Tuesday. Once it arrives, I'll finish my TWRP flashable stock 6.0 ROM for this device and start back on the modified stock ROM.
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Looking forward to it. I picked mine up from walmart just yesterday for using as a google maps/car media center
My Lenovo Tab 3 replacement finally arrived in the mail. I'll be picking up where I left off on compiling both unmodified stock and custom stock-based ROMs for this tablet.
On my modified stock based ROM, I'm considering the implementation of Substratum (Root Ver) for theming, but I would like to get the input of other device owners first. So far, I have debloated, deodexed and zipaligned the OS. I am including the modified/patched boot image with SuperSU v2.79 SR3 binaries installed for systemless root, Nova Launcher, Pixel Icon Pack, BusyBox v1.26.2 binaries pre-injected in /su/xbin/, and Kernel Adiutor-Mod installed in /system/apps/ for user defined adjustments to the stock kernel and governors.
You guys please give me input on what you would like included in the ROM. Thanks
r&xp said:
Hi all!!
This is for all the people who managed to softbrick (or hardbrick) their Lenovo Tab 3 8' (TB3-850F) tablets!
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I had a Lenovo Tab3 that bricked during the initial set up and this saved me for having an expensive paperweight! The process worked like a charm. You ROCK!
chienfou said:
I had a Lenovo Tab3 that bricked during the initial set up and this saved me for having an expensive paperweight! The process worked like a charm. You ROCK!
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Really glad it worked for you!!!
Thumbs up! :good::good:
load the scatter file .txt in SP Flashrom is OK ... it show me purple color until finish loading the file.
but how come when I hit the green button Download, it seems like nothing downloading,
thanks God, and thank you so muchhh muchhh muchhh for saving my tablet... after 2 days struggling with this brick
thank you the topic thread and MotoJunkie01 led me here :crying::fingers-crossed:
yiukiang said:
thanks God, and thank you so muchhh muchhh muchhh for saving my tablet... after 2 days struggling with this brick
thank you the topic thread and MotoJunkie01 led me here :crying::fingers-crossed:
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Try again to get TWRP installed to your /recovery partition or, alternatively, try to simply boot into TWRP from fastboot with the fastboot boot twrp.img command. It is common for members to experience some difficulty in installing custom recovery on this device. It has been my experience that most members are successful the second time around.
Thanks MotorJunkie!! But mine after was saved from brick from this thread, i was rooted it also by your instructions from other thread.. Now the gps from GoogleMap doesn't determine the location (even the location already turned on ) ... Plus i couldn't check the systemupdate ( it says connection network failed even i was connecting to wifi already) ...
What should i do, or do you know how to fix it?
yiukiang said:
Thanks MotorJunkie!! But mine after was saved from brick from this thread, i was rooted it also by your instructions from other thread.. Now the gps from GoogleMap doesn't determine the location (even the location already turned on ) ... Plus i couldn't check the systemupdate ( it says connection network failed even i was connecting to wifi already) ...
What should i do, or do you know how to fix it?
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System updates (OTAs) won't install on rooted operating systems. To install an OTA, you must have unmodified stock /boot, /system, and /recovery partitions installed. On the GPS issue, go to Settings, Apps, and ensure Google Maps has been granted location access permission.
Hi ...
I followed this guide but during the unbricking' I unplugged the device from USB (since I could not see any input on device or indication in SP Flash Tool).
Now the device will not turn on at all (previously I would see the Lenovo Logo splash screen but then it would just stay at this screen. Now i do not see anything).
When I plug into computer by USB, it causes my computer to freeze up (Windows 10).
Any ideas or is this now completely bricked? (hard bricked).
xavier234 said:
Hi ...
I followed this guide but during the unbricking' I unplugged the device from USB (since I could not see any input on device or indication in SP Flash Tool).
Now the device will not turn on at all (previously I would see the Lenovo Logo splash screen but then it would just stay at this screen. Now i do not see anything).
When I plug into computer by USB, it causes my computer to freeze up (Windows 10).
Any ideas or is this now completely bricked? (hard bricked).
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It sounds like a hard brick. I can't speak for the OP, @r&xp on this, so you may want to get his advice. Have you tried the OP's methods of using your hardware buttons for forcing the device into adb/fastboot recognition? I think this is your only chance of recovering it. By it not powering on, from my experience, a bootloader or bootloader dependent partition has been corrupted, thus hard bricking the tablet.
MotoJunkie01 said:
It sounds like a hard brick. I can't speak for the OP, @r&xp on this, so you may want to get his advice. Have you tried the OP's methods of using your hardware buttons for forcing the device into adb/fastboot recognition? I think this is your only chance of recovering it. By it not powering on, from my experience, a bootloader or bootloader dependent partition has been corrupted, thus hard bricking the tablet.
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Hello, I'll weigh in on this one. There are multiple threads above the TB3-850F on this forum and also another forum.
I initially followed a different thread and instructions which caused my problem. Notably do not allow TWRP write access !!! This mistake caused the soft-brick.
Anyone following any other advice about TB3-850F or downloading any other image BEWARe. Only follow the advice in this thread by r&xp:
https://forum.xda-developers.com/android/help/lenovo-tab-3-8-tb3-850f-unbrick-root-t3598727
Following this advice I now restored original image and then rooted in just a few hours.. Thank you r&xp for the good advice. :laugh: