How To Guide Install Stock ROM - Xiaoxin Pad Pro 2021 [TB-J716F]

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juliorcp

Member
Aug 25, 2022
8
7
Guys,

I bought the tablet with a global ROM and I tried to restore to the original ROM. I could restore but then I tried to lock the bootloader (to receive OTA updates) and I'm stuck at the fastboot mode. I can't boot the tablet into normal mode.

I tried to reflash the original ROM but when the tablet is rebooted after the reflashing it came back to the fastboot mode and it is in a loop.

I'm desperate because it seems a bricked tablet.

Can you help me?

Thank you!
 
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salzzz

Senior Member
Aug 27, 2011
136
17
Can someone share the dumped stock boot.img, vendor.img, recovery.img, and system.img of the latest zui rom?


This way we can revert to stock from GSI / unlocked bootloader, without the need of installing QPST
 

David2342

Member
Nov 16, 2016
7
0
Hello friends, I have version 13.1.560, does anyone know how to root that version? I have the bootloader unlocked, thanks for your help. Can i use the boot of 12.6?
 
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kazamama

Member
Apr 8, 2019
43
9
Just wondering where you saw this info. Looking forward to some expanded us with new 12L features.


It's mentioned in official Lenovo website that it will be updated to Zui 14 this month, but android version is not mentioned.

I just hope that it will be based on Android 12 and not Android 11. It will very disappointing for such a nice tablet to not get Android 12L
 
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salzzz

Senior Member
Aug 27, 2011
136
17

It's mentioned in official Lenovo website that it will be updated to Zui 14 this month, but android version is not mentioned.

I just hope that it will be based on Android 12 and not Android 11. It will very disappointing for such a nice tablet to not get Android 12L
yes, you can also look at the Chinese Lenovo forum or zui weibo page. Hopefully it's android 12L


Hello friends, I have version 13.1.560, does anyone know how to root that version? I have the bootloader unlocked, thanks for your help. Can i use the boot of 12.6?
Hi David,
do you happen to have the stock recovery.img of 13.1.560?

I dumped all the important images but they were deleted. and QFIL needs a windows machine.
 

kazamama

Member
Apr 8, 2019
43
9
Anyone got the Zui 14 update for this tablet? They said it will be updated to ZUI 14 on September and its almost the end of the month and so far nothing.
 

carlosfla21

Member
Sep 26, 2022
27
12
Rapaz,

Comprei o tablet com uma ROM global e tentei restaurar para uma ROM original. Eu poderia restaurar, mas tentei bloquear ou bootloader (para atualizar o TA) e estou preso no modo fastboot. Não consigo inicializar o tablet no modo normal.

Tente fazer o reflash da ROM original, mas quando o tablet for reiniciado após o reflash, ele voltou ao modo fastboot e está em loop.

Estou desesperado porque parece um tablet emparedado.

Pode me ajudar?

Obrigada!

Também estou com o mesmo problema, já instalei a sala original várias vezes e ela não sai desse loop de fastboot. Você conseguiu alguma solução?
 

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carlosfla21

Member
Sep 26, 2022
27
12
Hi guys, I'll leave my contribution here. I was forced to reinstall the ROM as I had the excellent idea to lock Bootloader with the 'Global' ROM installed. Everything went wrong and my tablet didn't start anymore, it was just on the Fastboot screen. The “Tropaion” tutorial helped me a lot.

I was using Windows 11, and it didn't recognize the tablet at all and when it did, it gave an error at the time of “download content” in QFIL, the famous error of “sahara fail”. At least in my case, I had to do the procedures for Windows 10 newly installed on the machine.

Starting from the beginning

  • I used the QFIL that comes with QPST_2.7.496. Qualcomm's driver installer came with it as well. (https://qpsttool.com/)
  • After installing QPST I put the ROM folder inside the bin folder. Example: "C:\Program Files (x86)\Qualcomm\QPST\bin\TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.211_ST_210730_qps"
  • I started QFIL and configured it according to what “Tropaion” taught.

The EDL Dilemma

  • As my tablet was already stuck on the Fastboot screen, so I turned it off and pressed the volume up button, connected the cable to the PC and tablet, waited a few seconds and released the button.
  • Soon it went into EDL mode (It stays with the screen off, but connected to the PC) and I continued the procedure in QFIL. (If there is any error and you want to exit this mode just press the volume up & Power On/Off button together for ~30s, but if everything works out you won't need to)
  • Then he did the installation and the Lenovo Xiaoxin Pad Pro 2021 worked perfectly. But with the bootloader unlocked.

Locking Bootloader with Chinese ROM installed


- Quando liguei o Xiaoxin Pad ele já tinha uma atualização da Lenovo. E foi atualizado com sucesso!
- Instalei a Play Store pela lenovo store, e até o tablet está com o Certificado Play Protect ativado e Widevine L1 tudo ok.


Importante: Este método funcionou para mim, mas não significa que funcionará para você. Imprevistos podem acontecer durante o procedimento. Como eu nunca instalei uma ROM na minha vida, demorei um bom tempo para corrigir meu erro e fazer meu Tablet voltar a funcionar :). Então faça por sua conta e risco.

Espero que isto ajude;)


Nova atualização Lenovo
View attachment 5440545

Informações de DRM
View attachment 5440511

[Atualização] ZUI 13.0.364 já está disponível!!​

View attachment 5463739
View attachment 5463741
Olá também sou do Brasil, o meu tablet estava igualzinho o seu, depois que instalei a room chinesa original tudo certo, ai bloquei o bootloader ai ele travou no modo fastboot. Já reinstalei a room várias vezes e ele não sair desse modo, você teria alguma sugestão ?
 

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carlosfla21

Member
Sep 26, 2022
27
12
So I would like to thank you for the tutorial. My tablet was stuck on fastboot, it was in loop.

" http://cdn.zui.lenovomm.com/developer/tabletboot/[your sn number]/sn.img" - just put the serial number on the back of the tablet in place [your sn number] takes it all away ai from the link above and put the serial number in the browser and the image will start downloading. I had to download the attached program, there I pasted the image inside the program folder, and ran the unlock bootloader that is inside the program folder when you extract it. And ready Bootloader unlocked then just install the original Chinese room by Qfil.
 

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VagnerVC

New member
Oct 1, 2022
4
2
So I would like to thank you for the tutorial. My tablet was stuck on fastboot, it was in loop.

" http://cdn.zui.lenovomm.com/developer/tabletboot/[your sn number]/sn.img" - just put the serial number on the back of the tablet in place [your sn number] takes it all away ai from the link above and put the serial number in the browser and the image will start downloading. I had to download the attached program, there I pasted the image inside the program folder, and ran the unlock bootloader that is inside the program folder when you extract it. And ready Bootloader unlocked then just install the original Chinese room by Qfil.
I have the exact same problem but the link to get the .img file doesn't work. I'm stuck at Fastboot and i need the .img file. I changed [Your sn number] as described.
 

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VagnerVC

New member
Oct 1, 2022
4
2
Just an idea, but maybe turn off AdBlock for the page and try again. I know that often messes with various things for me.
I solved the problem following this tutorial. It's not the easiest but will work.
Hello fellow friend,

"Corrupted device" NO LONGER
This guide is targetted at those who like me, locked their bootloader and got the message : "corrupted device blabla"
And are desperate as Lenovo doesn't answer when we ask for the unlock file via the ZUI unlock website.

Well, it is possible to change your serial number temporarily to unlock your bootloader with a known file for this serial. And this how you do it ->

1. Go into EDL mode (hold down volume up and connect to PC)
2. Launch QFIL, go to Tools -> Partition Manager (make sure you have selected the correct programmer prog_firehose_ddr.elf from the Chinese ROM)
3. Right click on the partition "fpinfo" -> Manage Partition
4. Click read data
5. Backup the data (it contains your serial number), you can find it in : AppData\Roaming\Qualcomm\QFIL\"your folder" mine is COMPORT_3 (the file contains the start adress of the partition : 0x2208)
6. Open a copy with an hex editor like HxD and modify your SN to HAHAHAHA (make sure your file is the same size as the original)
7. Back to QFIL : Load the modified file to the partition
8. Right click on the partition "frp" -> Manage Partition
9. Backup the data (file 0x2188)
10.
Open a copy and change the last byte from 00 to 01
11. Back to QFIL : Load the modified file to the partition
12. Download sn.img for HAHAHAHA from here
13. Boot your tablet into bootloader mode (check the new SN)
14. fastboot flash unlock sn.img
15. fastboot oem unlock-go

16. CELEBRATE because your bootloader is unlocked !
17. Back to QFIL : inject back your serial number backup in partition "fpinfo"
18. You can go back where you left -> Flash the Stock Chinese ROM
 

mashirogn

Member
May 30, 2019
5
0
My tablet(padpro2021) update to zui 14 ,but update fail and os broken , need zui 14 last version Qpst rom to try recovery,but........nothing.......(my english is no good ,sorryXD)
 

Paulo Rios

New member
Oct 8, 2022
3
0
Olá também sou do Brasil, o meu tablet estava igualzinho o seu, depois que instalei a room chinesa original tudo certo, ai bloquei o bootloader ai ele travou no modo fastboot. Já reinstalei a sala várias vezes e ele não sair desse modo, você teria alguma sugestão?
Conseguiu resolver Carlos, sou do Brasil também e estou preso na mesma tela que você.?
 

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  • 1
    Can someone guide how to bootlock and restore Chinese stock ROM back again for normal regular updates from Lenovo

    Moreover, I started to face issue using keyboard since yesterday as it's not working but showing enter PC mode whenever keyboard is attached to the tab.

    So guys help me with how to bootlock step by step since Im not clear with this , everywhere all are talking about errors. So need assistance from anyone who successfully did it and installed Google play as well
    1
    https://www.apkmirror.com/apk/googl...release/google-play-services-22-44-13-200400- 485906235-android-apk-download/


    I also had the same problem, so I downloaded this version of google play services on the tablet and installed it, and all google services worked perfectly
    Thanks

    I ended up finding out that the issue was the tablet with one of my wifi routers, after wasting many hours thinking it was something else (I already had updated the services over apk mirror and still was not ok, and even manually updated the device to firmware 13)

    I have absolutely NO idea why the google play store / OTA updates do not work over this particular router/wifi with this tablet (as it works normally with my Samsung phone), I tested changing many router / wifi network settings to no avail.

    Gladly I have a second internet / router and the tablet works properly with it, so I just forced it over to use that one and it's all fine.

    Still, something bad with these devices from Lenovo, so this is probably my last adventure with them, no worth all the hassle to get these things to work properly.
    1
    Hi there! I have some questions!
    Why with the original Stock ROM Zui 12 when you lock the bootloader it got corrupted? Should be ok, but I got the fastboot loop!
    I used the "HAHAHAHA" serial solution to got the tablet working again, but I am afraid that ZUI 13 will got me in problems again if I try to lock it. Even If i Lock the ZUI 13 is not guaranteed that I'll got the L1 certificate.

    A lot of problems with this tablet, I hope someday we'll have a simple solution to play some HD streaming content in it.

    Thanks!
    1
    Tem que atualizar para 13.1.560 e bloquear o bootloader para Widevine L1. Aqui está o link para atualizações.
    Muito obrigado! Também sou BR estava com o mesmo problema que o seu, quebrei a cabeça 1 semana tentando resolver e entender o que estava sentindo nos erros um após o outro. No fim foi só a imagem errada que eu peguei. Coloquei um certo com o tamanho de 6kb e foi tranquilamente.

    Agora preciso colocar para a versão 13.1.560, restaurei a stock rom porque a atualização da ZUI 14 é terrível.
    Obrigado por compartilhar as experiências aqui no XDA, uma ajuda o outro.

    -----BRASIL------
  • 17
    How to install Stock ROM - Xiaoxin Pad Pro 2021 [TB-J716F]

    I tried installing a GSI-ROM on this tablet, which basically worked except for three/four bugs I coulnd't solve.
    So I tried to restore the Stock ROM in the meantime and will share my experience.
    Your data will be deleted, try it at your own risk.

    Requirements:
    Installation:
    1. Boot tablet in EDL-Mode, there are two ways (in EDL-Mode screen always remains off):
      • If tablet is fully booted: use adb command "adb reboot edl"
      • If tablet is off or can't be booted: press the volume up button and hold, plug the usb cable into the tablet and PC and wait a few seconds
    2. Now this should appear in your device manager:
      device_manager.png
    3. Start the QFIL-Programm, it should detect the port with the same name.
    4. Go to "Configuration" -> "FireHose Configuration". At device type select "ufs" and tick "Reset After Download" then press ok:
      qfil_1.png
    5. Back in the main window select "Programmer Path" and browse to the ROM-Folder, select the file "prog_firehose_ddr.elf".
    6. Select "Content XML" and browse to the ROM-Folder, select the file "contents.xml"
    7. Click "Download Content" and wait, may take a few minutes
    8. After its done, this status message should a appear and the tablet should reboot.
    qfil_2.png


    Done, Stock-ROM should boot now.
    9
    Hi guys, I'll leave my contribution here. I was forced to reinstall the ROM as I had the excellent idea to lock Bootloader with the 'Global' ROM installed. Everything went wrong and my tablet didn't start anymore, it was just on the Fastboot screen. The “Tropaion” tutorial helped me a lot.

    I was using Windows 11, and it didn't recognize the tablet at all and when it did, it gave an error at the time of “download content” in QFIL, the famous error of “sahara fail”. At least in my case, I had to do the procedures for Windows 10 newly installed on the machine.

    Starting from the beginning

    • I used the QFIL that comes with QPST_2.7.496. Qualcomm's driver installer came with it as well. (https://qpsttool.com/)
    • After installing QPST I put the ROM folder inside the bin folder. Example: "C:\Program Files (x86)\Qualcomm\QPST\bin\TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.211_ST_210730_qps"
    • I started QFIL and configured it according to what “Tropaion” taught.

    The EDL Dilemma

    • As my tablet was already stuck on the Fastboot screen, so I turned it off and pressed the volume up button, connected the cable to the PC and tablet, waited a few seconds and released the button.
    • Soon it went into EDL mode (It stays with the screen off, but connected to the PC) and I continued the procedure in QFIL. (If there is any error and you want to exit this mode just press the volume up & Power On/Off button together for ~30s, but if everything works out you won't need to)
    • Then he did the installation and the Lenovo Xiaoxin Pad Pro 2021 worked perfectly. But with the bootloader unlocked.

    Locking Bootloader with Chinese ROM installed


    - When I turned on the Xiaoxin Pad it already had an update from Lenovo. And it was updated successfully!
    - I installed the Play Store through the lenovo store, and even the tablet is with the Play Protect Certificate activated and Widevine L1 everything ok.


    Important: This method worked for me, but it doesn't mean it will work for you. Unforeseen events can happen during the procedure. As I've never installed a ROM in my life, it took me quite a while to fix my error and get my Tablet back up and running :). So do it at your own risk.

    Hope this helps ;)


    New update Lenovo
    20211024_095359.jpg


    DRM Info
    Screenshot_2021-10-25-01-01-10-1625424965.jpg


    [Update] ZUI 13.0.364 is now available!!​

    Screenshot_2021-11-20-09-37-40-0847653534.jpg

    Screenshot_2021-11-20-09-37-24-0718768572.jpg
    8
    Finally managed to install China ROM. I started with unlocked bootloader and Banggood tablet with global ROM.
    Everything OK, finally got Widevine L1, OTA. Only English and Chineze languages. Netfix works in FullHD.

    I have run into sahara fail issue on windows 11. To resolve this, I followed @PHRS and @Tropaion guides. USB debugging has to be enabled first in the tablet menu.

    1. Install Qualcomm USB Driver v1.0 and restart computer
    driver.jpg


    2. Install QPST Tool in default path ProgramFiles(x86) https://qpsttool.com/qpst-tool-v2-7-496
    3. Extract ROM content in C:\Program Files (x86)\Qualcomm\QPST\bin\TB-J716F_CN_OPEN_USER; I guess this is important, because if I left the ROM in a Desktop folder, I got Sahara fail. May be due to windows 11 security implementation and ProgramFiles file access stuff...
    4. Connect tablet in EDL mode - I did it with with adb command "adb reboot edl"
    5. Check if the tablet is visible in Device manager, under Ports (COM&LPT); note the port number. Tablet screen is black.
    6. Execute as Administrator "C:\Program Files (x86)\Qualcomm\QPST\bin\QFIL.exe"; the port number from step 5 should be visible in QFIL.
    7. Setup QFIL / FireHose Configuration as indicated in Opening post (0-Sahara, ufs, reset after download)
    8. Browse Programmer path with "C:\Program Files (x86)\Qualcomm\QPST\bin\TB-J716F_CN_OPEN_USER\prog_firehose_ddr.elf" and Content XML with "C:\Program Files (x86)\Qualcomm\QPST\bin\TB-J716F_CN_OPEN_USER\contents.xml"
    Screenshot 2021-11-24 182003.png


    9. Click download content. For me it worked fast, the log showed the processes running in a few steps. I had a USB3 connection, maybe this is why it went very fast (~20-30 seconds).
    10. Tablet can be rebooted with the new ROM, but still Widevine L3
    11. To lock the bootloader, first install LenovoUsbDriver_v1.1.47
    12. Use @Tropaion lock batchscript https://forum.xda-developers.com/t/...n-pad-pro-2021-tb-j716f.4347321/post-85775623
    13. The bootloader is locked and the tablet is reset. Widevine L1 and OTA after this.
    14. A bit weird boot with all the Chineze, but embedded apps can be easily uninstalled. I installed Aptoide, then Google Play, Netflix, Swiftkey instead of the chinese one, etc.

    Thank you @Tropaion, @PHRS and the rest of XDA community. All the best!

    LE. By the way, when I first got the tablet I thought the wifi module is broken or something, because it connected my wifi, but with limited connection. I finally realized that the date/time was wrong (because of the empty battery I guess), and after I manually adjusted the date, internet connection was established.
    4
    It has multi-language and on the product page banggood says it comes rooted with Chinese ROM with play store installed and multi-languages.
    If it was original Chinese rom, it should have update option. Am I right?
    Hello @sabaku_chris! Your tablet has unofficial Chinese ROM.

    The official Chinese ROM does not come with the Google Play Store pre-installed and only comes in two languages, English and Chinese. It comes with firmware upgrade option (via OTA), with Widevine L1 and, if you install Google Play Store, comes with Play Protect Certificate.

    An advice: But if you don't need these features, continue with the version that was already installed on it. In case of doubt, do not change the ROM.
    4
    This is a guide for anyone that is trying to lock the bootloader and receiving a "Your device is corrupt" message.

    I just got my Xiaoxin Pad Pro 2021 [TB-J716F] which had the global rom and unlocked boot loader. I followed CleberJorge's amazing guide to put the original Chinese rom on which worked perfectly up until you have to lock the bootloader, which I then got the “Your device is corrupt…” message.

    To solve this you have to manually update to the latest version ZUI 13 before locking the bootloader again. Once you have done this you will be able to do OTA updates and you will have widevine L1 support for HD Netflix etc.

    CleberJorge's guide to flash to stock chinese rom is here https://forum.xda-developers.com/t/...n-p11-pro-2021-original-rom-tb-j716f.4446671/

    The process for updating manually is the following:

    1) download the update.

    2) use a file explorer and move it to the root folder of your device.

    3) rename it to "update.zip".

    4) Got to Settings => System Update => "Select the 3 dots top right and select 'Use the install package update'

    Repeat these steps for each individual update

    The order of updates are (this is from the stock Chinese rom version of TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.211_ST_210730_qpst

    1) TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.238_ST_210824_to_TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_13.0.346_ST_211108.zip - download link https://mega.nz/file/4h13DI4R#09imnGFk0c16CPNG635AYIClewuF5rXkiaj3xqGmjA8

    2) TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_13.0.346_ST_211108_to_TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_13.0.364_ST_211115.zip - download link https://mega.nz/file/l5ljWChS#rL44OM0-PuIFGZWSwr46pJr5S8NcY0JuYH7ctEeVTNs

    3) TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_13.0.364_ST_211115_to_TB-J716F_CN_OPEN_USER_Q00209.3_R_ZU...zip - download link https://forum.xda-developers.com/at...j716f_cn_open_user_q00209-3_r_zu-zip.5522973/

    4) TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_13.0.430_ST_220113_to_TB-J716F_CN_OPEN_USER_Q00209.3_R_ZU...zip - download link https://forum.xda-developers.com/at...j716f_cn_open_user_q00209-3_r_zu-zip.5598667/

    So the version you need to be running before attempting to lock the bootloader is 13.1.555 so double check your version in settings => My Device

    @CleberJorge you might want to add this to your guide.

    Spent alot of time cracking this annoying issue, so hope it helps a few people out.
    *Note this procedure works as of 25/5/22, it may change if there's a new update.