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

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Law111

Member
Jan 20, 2022
7
0
I installed qpst 2.7.496. I didnt have that installed earlier and that was the reason I was getting the Sahara error
 

Meanie

Member
Sep 6, 2009
6
2
My thanks for this. I was able to follow your instructions and get it to stock ROM instead of the dodgy ROM that the seller installed. The dodgy seller ROM had a bug or an issue that caused floating apps to not work at all, not to mention the security worries.
 

lee331

Senior Member
Dec 7, 2021
51
16
does anyone have qfil backup for this firmware and why my serial number is like this?
 

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lee331

Senior Member
Dec 7, 2021
51
16
danng i wish i didn't see this thread and flash it out of curiosity but in the end i am the only one to blame now im gonna resolve this issue using my hammer it is the only way, so i can finally find peace and relax my mind...goodbye my hard earned money and goodbye gaming...
 

lee331

Senior Member
Dec 7, 2021
51
16
for those who want to flash and reading this, this may serve as a warning....unlocked your bootloader first before doing anything if you still wanna try...goodluck
 

van40

New member
Jan 4, 2022
4
4
for those who want to flash and reading this, this may serve as a warning....unlocked your bootloader first before doing anything if you still wanna try...goodluck
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.
 

russy23

Senior Member
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.
thanks for this, my tablet came back from china with still a messed up serial number

the tablet is seen but i cant select partition manager

ok its becuase i havent loaded up rom, but will wont this brick my tablet again, if im doing something with the older rom?
 
Last edited:
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.
i had restore my serial number again, thanks to you, you saved my life 😄 where do you know about this?

i managed to relock and unlock, but still widevine l3, do you know if any problem? i also has twrp backup before widevine l3 knocked.
 

van40

New member
Jan 4, 2022
4
4
thanks for this, my tablet came back from china with still a messed up serial number

the tablet is seen but i cant select partition manager

ok its becuase i havent loaded up rom, but will wont this brick my tablet again, if im doing something with the older rom?
You mean, reading the partition? I don't think so. I think the partition manager must somehow be told where to find each partition and it finds this info in the rawprogram*.xml files. Just be aware "Read Image" reads the partition from the device. "Load Image" writes a partition in binary onto the device. It's basically dd
 
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  • 1
    View attachment 5611593
    Finally i enter to EDL mode by ADB ....the thing is that i get a different name code i get qloader 9008 com 3 instead Diag com 4 like the picture...is this a problem or i need to get the diag com 4 ...
    Hi again!

    There's no problem, really. If the tablet is the only thing connected to your computer, that should be the one.
    1
    Hi again!

    There's no problem, really. If the tablet is the only thing connected to your computer, that should be the one.
    thanks dude, i will make the test during tonight .. wish me luck...
    1
    I need help i accidentally press erase before download in QFIL , anyway to fix it.......
    Hi
    Try following this guide in (Part 4/Mode1) and putting the Tablet into forced EDL mode, and see if the PC can communicate with the PC via the USB port
    Install all Qualcomm USB drivers from this tutorial and try to follow the tutorial.

  • 14
    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.
    8
    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
    7
    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.
    3
    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.
    3
    Guys, I uploaded the update here if you're interested...