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

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Apr 23, 2020
36
18
Sorry to bother but does anyone know how to fix this issue? It always seems to happen whenever I reboot. I tried resetting via QFIL but it doesn't seem to work.View attachment 5747279
Adding to this, the boot sequence takes even longer than expected, plus the sound is completely wiped out. Apps are even glitching out or sometimes won't open at all. This also happens when I have a GSI rom so there's no use in switching back to GSI for now. . .
 

KardneX

New member
Oct 31, 2022
1
0
Hi dear colleagues,
Here is some input data. To unlock my bootloader I had to use the scheme with changing the serial number of my tablet to HAHAHAHA, but during this process something was wrong and I had problems with booting my tablet, so I had to install stock recovery ROM -version 12.6.211 via QFIL.
But after downgrading the firmware to stock 12.6.211 via QFIL I faced that bootloader still unlocked so, I decided to install TWRP recovery (twrp-3.6.1_11-0-J716F.img) to my tablet and it was successfully installed.
Because my table for unlocked I couldn't update the firmware to the latest version (ZUI 13.1.560) via OTA, so I tried to install ROM files via TWRP, but when I started the updating process, I'm getting the following error:
4.jpg

and updating process was canceled.

I will be highly appreciated for your help and support with your ideas and recommendations how to solve this issue !

Thanks in advance,
Alex
 
Last edited:

fleps

Member
Dec 9, 2010
11
2
Hello

I have my tablet for about an year now on the firmware version 12.6.238 (as I knew updating to v13 would/could mess up Widevine and Play Store certificate)

I've installed Google Play Store back then probably via APK Mirror or something, and probably google play services and something else, and at some point everything was fine (purchases, installs, updates).

I haven't used the tablet for a while now, and today when I went to the Play Store to do a long overdue app updates, nothing worked anymore.

It stayed on "pending download" until it just stopped (no specific error message). I then tried to install a new version of Play Store from APK Mirror and the app updates now start but get stuck halfway and fail.

I also tried to update Google Play Services but every version I try it just fails to install.

Anyone has any idea how to fix this and have Play Store back to normal on FW 12.6.238?

Thanks
 

BunnyJay

New member
Nov 6, 2022
2
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
 
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Gara-Sama BR

Member
Nov 8, 2022
6
0
Recife
Hello.

I saw your post here and I really appreciate your help and time making it. Could you help me with flashing? Accidently I've changed my slot A to B inside TWRP and now the tab doesn't make any sign of turning on. I think the firmware is still there, but I'll need to flash using QFIL. I think I've made successfully in entering EDL mode, Qualcomm drive appears in Control Pannel, but I'm getting Sahara error while trying to flash as below.
Could you help me to understand what I'm doing wrong?
i guess. Still with the issue (question mark)
 

Gara-Sama BR

Member
Nov 8, 2022
6
0
Recife
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
ok, Still with the issue (question Mark)
 

carlosfla21

Member
Sep 26, 2022
29
13
Hello

I have my tablet for about an year now on the firmware version 12.6.238 (as I knew updating to v13 would/could mess up Widevine and Play Store certificate)

I've installed Google Play Store back then probably via APK Mirror or something, and probably google play services and something else, and at some point everything was fine (purchases, installs, updates).

I haven't used the tablet for a while now, and today when I went to the Play Store to do a long overdue app updates, nothing worked anymore.

It stayed on "pending download" until it just stopped (no specific error message). I then tried to install a new version of Play Store from APK Mirror and the app updates now start but get stuck halfway and fail.

I also tried to update Google Play Services but every version I try it just fails to install.

Anyone has any idea how to fix this and have Play Store back to normal on FW 12.6.238?

Thanks
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
 

fleps

Member
Dec 9, 2010
11
2
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.
 
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Apr 23, 2020
36
18
You can restore your serial number and unlock your device. You probably erased your fpinfo partition. There are five essential partitions for our device( I learned this the hard way, by checking Erase All Before Download) - fpinfo, persist, uefivarstore, secdata and frp.
BACK THEM UP AT ALL COST, IF YOU WANT TO EXPERIMENT WITH YOUR DEVICE (like I said, I learned this the hard way) TWRP does not back them up unfortunately...

Your serial number lives in the fpinfo partition and on a sticker on the back of your xiaoxin pad pro box. It`s the first 8 characters in the partition.
You can read the partition by going to Tools->Partition Manager in QFIL ,then right clicking on the fpinfo partition and clicking on "Read Image". The partition will be stored in %AppData%\Qualcomm\<port number of your QDLoader port>\something-like-current-date.bin
Open the downloaded partition with a Hex-Editor (e.g. HxD) and insert your serial number under "Decoded text" by selecting the dots one by one and typing your serial number one character at a time or by copying your serial number marking 8 dots at a time in HxD and pasting it. Now save the bin-file. Then click in Partition Manager on "Load Image" and choose the bin file you just edited. Your Serial number should be restored after you restart, you can unlock your device like Tropaion explained in the other thread.
Hi, I don't know where else can I contact you through, but is it okay if I get a copy of your important partitions? (fpinfo, persist, uefivarstore, secdata and frp)

I'm trying to fix the issue that my tablet's been having, and maybe this could be the fix.
 

MagnaAttack

New member
Nov 14, 2022
1
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!
 
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Nov 20, 2022
9
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------
 
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azwina

Senior Member
Apr 12, 2012
105
13
Hi everyone, my tablet is from zui13 v560, follow 1 st post flash the stock rom, after flash stock rom i stuck at this fastboot mode stage cannot go further, i follow hahahaha step to unlock bootloader also same, i lock and unlock also same , flash many time also same cannot go further stuck at fastboot mode like attachment photo. any member can help to solve this problem ??
 

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gunalarix8

Senior Member
Hi everyone, my tablet is from zui13 v560, follow 1 st post flash the stock rom, after flash stock rom i stuck at this fastboot mode stage cannot go further, i follow hahahaha step to unlock bootloader also same, i lock and unlock also same , flash many time also same cannot go further stuck at fastboot mode like attachment photo. any member can help to solve this problem ??
azwina where are you from? i m from malaysia, do you hv telegram? i can contact you and help you there, kindly pm me thru xda dm. 😆
 

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  • 1
    did you change the HAHAHAHA sn.img before locking it?
    Yes, I put back the original serial number
    1
    Thanks. Also, were you able to request sn.img or did you use the HAHAHA sn.img? I'm having no luck requesting from zui unlock website.
    I used HAHAHAHA sn.img. It was the only way I found
    1
    Last time I tried to lock this tablet it says device corrupted i didn't do it in fastboot let me try your steps and let's see. Thanks.🤞


    It worked!! Thanks a lot for sharing info here!
    Device is showing certified in Play store but still L3 not L1. That's fine as long as it is locked now.
    this is weird, you can try watching something on netflix, you might be able to watch it in high resolution. If not, you can try the process again. but then you will have to unlock it. the bootloader, and manually install the versions, and then lock the bootloader. you can put here what will happen after trying to watch Netflix or other services
    1
    To follow the instructions, do you need an unlocked bootloade yes, it better be unlocked. Many things can go wrong, and you can have many problems to try to solve
  • 18
    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.
    10
    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.