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

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russy23

Senior Member
Yeah. It’s fine. I had some whack ass Android rom ship with mine which was like almost fake. It was like android 11 but no way to update. Least This one is updatable. Still hoping someone can just release a stock vanilla android Rom with updates. But this will do for now. Does the job.
Which one..I like lenovo one most the time..but a couple things annoy me plus I think China ROM plays havoc with in game stores..

As this is my only tablet and to me its was a expensive device would you still recommend using GSI ROM..thanks..as you can probably tell I'm not very clued up..last time I tried to install a gsi it borked my device,.
 

sebseb83

Member
Nov 6, 2021
11
3
Which one..I like lenovo one most the time..but a couple things annoy me plus I think China ROM plays havoc with in game stores..

As this is my only tablet and to me its was a expensive device would you still recommend using GSI ROM..thanks..as you can probably tell I'm not very clued up..last time I tried to install a gsi it borked my device,.
I have no idea. I am from Australia. So I guess a westernised one. It seemed almost stock but no way to update. Very weird so I went the gsi rom. Disabled most of the Asian stuff which is no used to me. It’s not perfect but does the job. I don’t play many games so not sure how that goes. I failed a few times before I was able to successfully flash this rom. The drivers can be a real pain in the ass. Good luck.
 

lee331

Senior Member
Dec 7, 2021
51
16
phcorner.net_5250609_IMG_20211206_1838075432.jpg
phcorner.net_5250610_IMG_20211206_1838007222.jpg

help i cant unlocked mine i keep getting Please enter the correct serial number even its right
about:blank
 

DuckyonPC

New member
Dec 8, 2021
1
0
I was wondering if you were able to unlock the 120hz refresh rate option? In the lineage OS display options, there is no refresh rate options, and when showing the display refresh rate through the developer options it's stuck at 60hz while the tablet's max is 120hz.

Are there any ADB commands that can be used to set the tablet's refresh rate to 120hz?
 

russy23

Senior Member
I was wondering if you were able to unlock the 120hz refresh rate option? In the lineage OS display options, there is no refresh rate options, and when showing the display refresh rate through the developer options it's stuck at 60hz while the tablet's max is 120hz.

Are there any ADB commands that can be used to set the tablet's refresh rate to 120hz?
Adding to this is the tablet just using max display Hz while using LOS..

Also anyone tried official LOS 12
 
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i succesfully unlock bootloader and tried gsi from dsu loader, it showed same display orientation problem and overlay hardware problem (proximity display case, vibration and more), however the gsi shows bright future to our beloved tablet, smooth interface and AOSP! i also tried Pixel Experience by phh, same problem tho. I am glad if anyone step ahead fix the issues and start a daily driver rom!
 

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MM.626

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May 17, 2013
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i succesfully unlock bootloader and tried gsi from dsu loader, it showed same display orientation problem and overlay hardware problem (proximity display case, vibration and more), however the gsi shows bright future to our beloved tablet, smooth interface and AOSP! i also tried Pixel Experience by phh, same problem tho. I am glad if anyone step ahead fix the issues and start a daily driver rom!
Can u try flashing android 12l gsi rom? mine is behaving weird today, camera permission is being used by some app even after clearing ram. I checked using permission manager app it shows security center and settings is auto starting by themselves but they're not the one using camera permission, I'm also going to flash gsi rom sooner when I have time.
 
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russy23

Senior Member
i succesfully unlock bootloader and tried gsi from dsu loader, it showed same display orientation problem and overlay hardware problem (proximity display case, vibration and more), however the gsi shows bright future to our beloved tablet, smooth interface and AOSP! i also tried Pixel Experience by phh, same problem tho. I am glad if anyone step ahead fix the issues and start a daily driver rom!
Would be good..thought honestly the ROMs would be coming out well for this tablet..I guess its not as popular tablet as I thought it was..
 
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hye xda-er,

after flashing several gsi's (pixel experience a11/12 and octavi os),
i found out that geekbench score is a bit worse than the stock rom,
i attached the score here:-

stock rom
-single score = 967/955
-multi score = 3111/3067
-vulkan score = 4256
-opencl = 3579

gsi's
-single score = 948
-multi score = 2619
-vulkan score = 3400
-opencl = 3500

how about all other experiences?
 
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  • 3
    We should spam this forum thread, maybe then they will eventually react :D
    3
    We should spam this forum thread, maybe then they will eventually react :D
    I am doing my damnedest! I also got PE12.1 running today after finally taking the plunge and just wanted to also say thanks for the initial write-up. It got me through the whole process with only a couple (tiny) snags.
    The command fastboot reboot fastboot(d) can be confusing 😁 I eventually ended up using the key combos to get where I needed due to my not having everything up to date and pristine.
    With the exception of the never ending autorotation bug and pixel launcher being not optimized for tablets, it is still miles above ZUI, imho.
    2
    @gunalarix8 Sadly not possible because there is no kernel source.
    @TheNiceGuy11999 I created a GitHub issue before.
    I you read through the first thread page you can finde everything you wanted.
    Lenovo uploaded the open source file for global variants. I could not find the chinese variants. 🤣 It was uploaded very recently. 😁
    1
    No, actually! The only lag that I found is when I tried to change the boot animation. I heard that the system is partitioned exactly to fit every file, so when I tried moving a new bootanimation.zip into /system/media (couldn't find this in other GSIs that I tried) and rebooted, the whole system lagged like crazy. Maybe it's because there wasn't any boot animation?
    That's right, the partition resizes automatically so all files added will be non-existend.
    But you can try this: https://forum.xda-developers.com/t/...n-pad-pro-2021-tb-j716f.4348249/post-85900623
  • 6
    How to install GSI ROM - Xiaoxin Pad Pro 2021 [TB-J716F]

    I tried to install a GSI ROM on this tablet, because there is only a chinese version available.
    The tablet supports treble and I managed to get different GSI ROMs booting on it, but with a few annoying bugs I couldn't solve.
    I thought I will share my experience here and maybe someone with more expierence can help to solve these problems.
    Your data will be deleted, try at your own risk.

    Treble Device Information (Treble Info):
    Required Image: system-arm64-ab.img.xz
    Supports modern version of treble and uses VNDK30.0
    Supports System-as-Root, uses A/B operating system
    Supports seamless upgrades and uses dynamic partitions (super partition)
    Requirements:
    Installation:
    1. Go to "Settings" ->"System" -> "About Phone", tab on it until developer settings are enabled.
    2. Go to "Developer Settings" and enable "USB Debugging", allow USB-Debugging if tablets asks.
    3. Reboot to bootloader: "adb reboot bootloader"
    4. Flash vbmeta.img: "fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img", you only need to flash it once
    5. Reboot to fastbootd: "fastboot reboot fastboot"
    6. Flash GSI-ROM: "fastboot flash system lir-v313+211012-arm64-bgZ-lite.img" and wait
    7. Using volume keys on tablet select "Enter recovery" and then select "Wipe data/factory reset", reboot device.
    8. Now it tries booting the ROM, after the "bootloader unlocked" warning, the lenovo logo should show up. Here I often had the problem that it didn't boot at first try. If, after waiting for 20-30s the ROM doesn't boot, press the power button to reboot tablet. After trying it a few times it always worked. This problem only occurs at first boot up, after setting the ROM up, it boots normally.
    9. Now after booting, when using the LiR-ROM, you have to set up the tablet. In the fourth setup window, the ROM is asking for a SIM-Card even though the tablet doesn't support GSM. You can skip this by entering to adb commands "adb shell settings put secure user_setup_complete 1" and "adb shell settings put global device_provisioned 1". After sending these two commands, then pressing return in the setup, it should complete.
    10. After successfully booting, the "Home" and "Tasks" button is missing. After a reboot they should appear and work normally but I recommend to set a lock pin first.
    Known Bugs/Problems:
    AutoRotate
    When activating autorotate, the display is always orientated in the wrong direction by 270°.​
    I tried to solve it with two different commands added to build.prop:​
    1. "ro.sf.hwrotation=270" -> didn't do anything​
    2. "ro.surface_flinger.primary_display_orientation=ORIENTATION_270" -> the screen rotated in right direction, but the touchpanel did not.​
    Workaround: using an rotation controll app, but I'm not a fan of it.​

    Overlay - AutoBrighness, Magnetic Screen Lock, Battery Save Mode
    I tried creating an overlay according to the instructions but sadly the "FrameworksResTarget.apk" from the vendor folder doesn't provide much configuration information including for the above mentioned issues. I tested values from similiar devices but didn't have any success. If someone is interested to try, here are the files I extracted from the tablet and the current overlay I created.​

    Hopefully, someone here knows how to solve these problems.
    4
    After a lot of jumping through hoops, I was able to get custom ROMs running on the tablet. Though I do want to share my experience with it.

    I chose to run BlissOS 15.3 on it the first time, and it worked quite well, despite the known bugs such as the rotation, adaptive brightness not working, and the phhTreble settings not working either. (Not sure if it is specific to the ROM but there's that.)

    A few things I noticed, TWRP would encrypt the partitions if you enabled a password on the system, and the decryption password is not the same as the one you set as the system password.

    Another thing is setting the screen cutout to anything else other than the default, to which it will cause the whole screen to turn to black, rendering it useless unless you wipe the data in recovery mode.

    I also found out that by changing the boot animation, it doesn't actually write on it, turning the bootanimation.zip file to 0 bytes when moved, a.k.a. it becomes non-existent, and thus when rebooting the tablet, it will drastically slow your device down. Sometimes it even heats up the device, I can even feel it through the casing.

    I also tried other Android 12 GSIs, including Android 12L ones, but it had a few more issues, especially the navigation bar on Android 12L.

    So for me, BlissOS works fine the best for me.

    If anyone can find out how to fix these kinds of issues, let us know.

    Thanks to @Tropaion for the instruction guide!
    3
    We should spam this forum thread, maybe then they will eventually react :D
    I am doing my damnedest! I also got PE12.1 running today after finally taking the plunge and just wanted to also say thanks for the initial write-up. It got me through the whole process with only a couple (tiny) snags.
    The command fastboot reboot fastboot(d) can be confusing 😁 I eventually ended up using the key combos to get where I needed due to my not having everything up to date and pristine.
    With the exception of the never ending autorotation bug and pixel launcher being not optimized for tablets, it is still miles above ZUI, imho.
    3
    hye xda-er,

    after flashing several gsi's (pixel experience a11/12 and octavi os),
    i found out that geekbench score is a bit worse than the stock rom,
    i attached the score here:-

    stock rom
    -single score = 967/955
    -multi score = 3111/3067
    -vulkan score = 4256
    -opencl = 3579

    gsi's
    -single score = 948
    -multi score = 2619
    -vulkan score = 3400
    -opencl = 3500

    how about all other experiences?