yashsingh1/xdaforums huggingface dataset:
[Lenovo P11] itwigo:
looks like prime video is not working on CN rom ZUI15 : when i launch a video it says : "TDS_ERROR" video is not available.

edit : it didn't work with my amazon account with is linked to my mainland country "France".

When i changed my region preferences on my account to "United States" it migrated my account to amazon.com and now when i open Prime Video to play a movie it works fine in 1080p quality (make sure you have hardware acceleration in app turned on)
[Lenovo P11] lion0007:
Have you tried a factory reset ?
[Lenovo P11] dilldoe:
yes, all the possible way. Factory reset in settings, then I tried Factory Reset in the Hardware Diagnostic (holding vol up) and also a reset in recovery mode

Even after each factory reset, when it goes to setup, it just freezes on the Connect to Network part.

I've even tried Resetting Wifi/Bluetooth in settings, still nothing works.
[Lenovo P11] lion0007:
I think perhaps the wifi get locked at some how , if that the case you need to install "TermOne Plus" app from play store ( this app need root privileges to function) , after you install the app go to the right top corner and click on the three dots ,then choose "Take wifilock" option and reboot the tablet.

If that didn't work try to reflash your tablet from scratch by following the instructions at the first page of thread
[Lenovo P11] dilldoe:
Thanks, I might give that a try before. I read that I should back up stuff before root incase anything goes wrong, is there a tutorial for that here?
[Lenovo P11] lion0007:
[TB138FC-SD870] XiaoXin Pad Pro 2022 Sharing and support

I'm starting this thread to share among the owners who having and using this variant of the new XiaoXin Pad Pro 2022. This will contain on usage and support too. Working: ZUI PC mode ZUI 14 the latest OTA will oly support the PC Mode. ZUI...

xdaforums.com

Note:you have to unlock bootloader to be able to root the device.
[Lenovo P11] dilldoe:
Yeah, I know that. If I don't it'll get stuck in a boot loop. I'm on ZUI 15, it's not going to be a problem right?

also

where can I find this EMMCDL_GUI tool?

If this doesn't work and I reflash to ZUI 14 on the first page, does that also remove root. If the wifi issue is hardware and it's dead, I need to restore it to factory condition so I can return it.
[Lenovo P11] lion0007:
You can find at the 4pda forum (you need to register to be able download files ), unfortunately i can't give you the link because 4pda links are prohibited in the forum.

If your warranty is still active then you should not try unlock, flash or root the device, because that will void your warrenty, specialy if the problem apears to be a hardware failure.

I think you should try your warranty before trying any solutions
[Lenovo P11] dilldoe:
I found it in a previous post, v.1.5 is the latest right?

I brought this on aliexpress, so not sure I have any warranty, but It's still in the window of return. I really think it's a software issue because wifi was working fine for a day or two until it stop after a power cycle when it ran out of battery. So if I can get it working again, great. If not I want to know I can restore it back to factory condition before returning it.
[Lenovo P11] lion0007:
I m not sure if you could relock the device to it' s original state once you unlock it, however you could try reflashing it using lenovo official tools (Lenovo MOTO Smart Assistant)
[Lenovo P11] dilldoe:
I tried to use that tool but it said it doesn't work on this tablet, only on US versions
[Lenovo P11] dilldoe:
Is that right, I thought it was TB138FC?
[Lenovo P11] dy2592:
I got mine from AliExpress loaded with bootloader unlocked and global rom and here's what I have done or want to fix and to make it more enjoyable.

Constant AppStore crashes. I installed the latest apk version from apkmirror and it fixed it.

Installed NovaLauncher but haven't figured out how to disable the lenovo dock that comes up when you swipe from bottom up.

Installed adguard with https filtering. Rarely see ads now.

Installed Hermit. ZUI doesn't have a feature like Samsung does where it forces app in landscape to fill the screen. With Hermit it creates web apps that uses the website in a wrapper taking up full screen.

Installed MoreLocale2 and applied English. Eventhough language was set to english in ZUI, there was things like location permission prompts coming up in Chinese.

ZUI security was aggressively killing my apps such as VPN, bitwarden, syncthing, pushbullet, etc. Was very annoying but found out how to disable it and remove it via adb shell.

Enable widevine L1 but that requires locking bootloader and I'm not sure if that would cause other issues -pending

Disable Lenovo dock -pending
[Lenovo P11] dilldoe:
which store did you get it from?
[Lenovo P11] dy2592:
do you mean for #1 to fix the playstore crashes?

Got it from apkmirror

Google Play Store 40.3.31-29 [0] [PR] 619730322 (nodpi) (Android 10+) APK Download by Google LLC - APKMirror

Google Play Store 40.3.31-29 [0] [PR] 619730322 (nodpi) (Android 10+) APK Download by Google LLC - APKMirror Free and safe Android APK downloads

www.apkmirror.com
[Lenovo P11] dilldoe:
no I mean the tablet. I'm gonna have to return mine and seems that all the stores on aliexpress is sold out so I can't even buy a new one.
[Lenovo P11] dy2592:
From Lenovo store but yea you're right,all gone

https://www.aliexpress.us/item/3256804496934421.html?spm=a2g0o.order_list.order_list_main.5.3b171802MqTW3Z&gatewayAdapt=glo2usa
[Lenovo P11] Nana Ayeh:
You did a great job giving the links and all the instructions on unbricking. However, you did not give clear instructions on how to flash the firmware in the instructions here.

I got my Tablet TB138FC with Bootloader already unlocked and running 14.0.820

HDR and Widevine L1 is not working for Netflix.

I really would like to go to stock China ROM and then lock the bootloader and receive the latest OTA updates and also have HDR and L1 working for me.

How do I do it?

Again, can we have links to files and zips that will be needed for the process also itemized to make it easy for newbies who are tricked on AliExpress like myself using a fake global ROM and stuck with no updates.

Please help with step by step guide for those of us who already have bootloader unlocked. if we download the firmware, what is next?
[Lenovo P11] Dan1201:
Hello from Germany,

i need help from you, Community...

i bought the tablet from AliExpress with a dealer-modified "global" ZUI 14 unlocked Rom.

Now i locked the Rom via fastboot, because I want widevine L1 back.

Now my tablet is locked and the only thing that work is FastBoot Mode.

So first of all i need the unlocked sn.img to write it back via FastBoot.

I try to get the unlocked sn.img via https://m.zui.com/iunlock since 5 or 6 weeks on different days with different mailaccounts but i have no luck.

The procedure seems to work, but i never received an email with the unlocked sn.img.

So my question now is, can everyone try to get the

sn.img on https://m.zui.com/iunlock for me (i will give you all needed Data, S/N and so on) and send me the unlocked sn.img by PN ?

So, if you want to help me, please contact me via PN.

Thanks in advance 👍
[Lenovo P11] ValuePlz:
I just got a Xiaoxin Pad Pro a few days ago and all was working fine on until the screen just became unresponsive today. No idea what happened it just bricked suddenly.

Tablet is turned on and buttons work but screen itself does not respond to any touch, either by hand or with the pen so I can't shut it down and try a reset. I tried holding volume up and power button to enter recovery mode but it doesn't seem to work if the tablet is turned on.

Anything anyone knows that I can try in this case to get it to work? Battery is still at ~70%, so it's going to be a while until it dies on its own.

Developer options have also not been turned so also don't think installing ADB would allow me to reset from connecting to my PC? Altho I didn't try this yet.
[Lenovo P11] ValuePlz:
Fixed.

If anyone runs into this issue in the future the button shutdown method is power up + volume up (hold vol up for 10 sec and release while holding power button), then press vol down along with power button for another 10 sec then release both.
[Lenovo P11] buickman104:
Thanks for the write up. If just got my TB138FC from Ali with the global rom and unlocked bootloader. What is the benefit of installing the official China ROM over the Global one?
[Lenovo P11] Chikinfrays:
Is it normal that every time I type on my folio keyboard the "Choose input method" keeps appearing on the bottom of my screen? I have been searching for tweaks for this, it is annoying me that there is a black bar on the bottom of the screen. I cannot maximize the use of my screen.
[Lenovo P11] oksza:
Two major benefits: (1) system updates (both functional and security), which you don't have on the unofficial global rom (2) widevine L1, which allows you to stream HD/ QHD content in streaming apps such as Netflix. If you don't mind both, you can skip meddling with the device.
[Lenovo P11] gambaaa:
Is there any guide that I can follow to successfully ROOT ZUI 14/ZUI 15 with China ROM (TB138FC)

I'm confused on which to follow. Thank you
[Lenovo P11] Sage:
can i ask if you're all happy with the tablet? thanks
[Lenovo P11] Vitaly56:
Helo!

Please send these sections fpinfo.bin, frp.bin, persist.img in private messages.

I think they were erased, because of this Wi-Fi does not work.

I want to find differences with mine.
[Lenovo P11] fankay:
Have any way to use android auto ?

Cn version zui 14
[Lenovo P11] fankay:
What is best? Zui14 or zui15

I have no idea to upgrade to zui15
[Lenovo P11] buickman104:
Yup, very happy with the screen speed and performance for $180. There are some small inconveniences with the rom, but if you have the technical skills to overcome the rom issues then it is an amazing value for the money.
[Lenovo P11] hugo06:
Hello,

I try to flash my tablette but I have this error :

Any idea ?
[Lenovo P11] Sage:
Run as admin?
[Lenovo P11] Pierre_D:
Lien :https://xdaforums.com/t/tb138fc-sd8...is-corrupt-after-lock-the-bootloader.4671360/

Title : [TB138FC-SD870] XiaoXin Pad Pro 2022 - ''Device is corrupt" after lock the bootloader

Content :

Hi everyone,

I hope someone can help me.

To explain my problem, I searched a lot before creating this XDA thread.

I have already read each message from:

[TB138FC-SD870] XiaoXin Pad Pro 2022 Sharing and support

I'm starting this thread to share among the owners who having and using this variant of the new XiaoXin Pad Pro 2022. This will contain on usage and support too. Working: ZUI PC mode ZUI 14 the latest OTA will oly support the PC Mode. ZUI...

xdaforums.com

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

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...

xdaforums.com

Lock+Unlock Bootloader - Xiaoxin Pad Pro 2021 [TB-J716F]

How To Lock and Unlock Bootloader - Xioaxin Pad Pro 2021 - TB-J716F Since I found out that the Tablet supports Project Treble I'm trying to get a GSI-ROM running on it. Currently with many trial and error I got LiR-ROM to boot. The first step is...

xdaforums.com

Unlock Bootloader without proper unlock file - Xiaoxin Pad Pro 2021 [TB-J716F]

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...

xdaforums.com

So, I managed to install the official Chinese ROM and unlock my bootloader.

I bought this tablet from a French seller, but it came with a global ROM and a locked bootloader.

I unlocked my bootloader and installed the official Chinese ROM, but after I tried to lock my bootloader, which I succeeded in doing, after the first reboot I got the message "Your device is corrupt".

So, the fruit of my research: - I have a different serial number in the fastboot menu compared to the serial number marked behind the tablet. But with the ADB command and "fastbootd", I got the same serial number as the one on the sticker behind the tablet. It could probably be the cause of the message, but in the 1st link, 2 people managed to lock the bootloader after doing 2 OTA updates, which I did, and I got the same message "your device is corrupt"... after locking the bootloader.

So, I tried to lock the bootloader with the script found on the XDA forum and reflash the Chinese ROM, but the same result occurred, I booted directly into the fastboot menu.

Please, can someone help me to lock this bootloader with this official ROM? I would like to have L1 certification on Netflix, it's my goal. But I don't know what to do next to achieve this...
[Lenovo P11] ZhenMing:
Turn AndroidOS to ChromeOS
[Lenovo P11] leobmw320:
Hi guys,

First of all, thanks so much to everyone, I've read all the 31 pages so far in this thread and could succesfuly flash my tb138fc back into the chinese original rom.

What I couldn't do is lock the bootloader. When I write "abd reboot bootloader" the tablet restarts and boot in bootloader mode, so far so good, but then, when I write "fastboot flashing lock" I see "waiting for device" in the cmd window and nothing happens in the tablet. Any ideas? What am I missing?

Thanks to everyone!
[Lenovo P11] jsm0098:
Hi I just got my new pad bro with original chinese rom.and it was already working with zui 14 with Android version 12. I am from Pakistan it started to update by itself without having any problem and I did not have to change to the Chinese VPN so now I have got updated version with ZUI 15 and Android 13 and my Netflix and everything is working well and my Netflix is showing the L1 level but there is no HDR. I don't know how to get the HDR. so even if you install the original Chinese ROM there is no HDR
[Lenovo P11] Pierre_D:
Hi, I know, but the problem was I have a locked bootloader at fisrt with a fake global ROM with bugs...

Now I can use the tablet in a better way but if I can't lock the bootloader i will stay with Netflix L3.

King regards to you and thanks you for your answer.

I keep hope someone will help me.
[Lenovo P11] binnkim:
I received the same tablet with Chinese rom and did not update. I am currently on zui 14 as it came. Netflix says L1 but no HDR.

Reading through this thread but it's really unclear how to fix this or if it's possible even.

Some say Netflix says L1 but it streams at L3, some says it's L1 and streams at L1.

Any experts on this forum who can clarify? Is there a fix?
[Lenovo P11] buickman104:
Did you ever figure out a solution to this issue? I have the same issue and tried 2 different sd card brands San disk and Samsung. Both have the same issue.
[Lenovo P11] Rail-:
I'm running China Rom and the apple USB C earphones can't connect to the device. If I plug in a via usb c hub it works though. Anyone have any experience in getting USB C earphones working?
[Lenovo P11] h4vok_xda:
I'm having the same issue i literally switched on the tablet and my wlan was greyed out after what i think was an automatic update, granted I'm still on zui 15 but i have the prompt to upgrade to zui 15 with android 14 but i cant because i have no WIFI i think i might just downgrade down to zui 14 because it was working before and just disable auto update.
[Lenovo P11] NeedHelpThanks:
Hey, I had this problem today after my Lenovo tablet (TB138FC; 15.0.321) ran out of battery and I charged it back up again. The WLAN button can no longer be turned on and its grayed out/frozen after pressing it. Exactly the same issue as dilldoe described with the images he posted. I am completely at lost with what to do. Mine was bought with the original chinese ROM, and I've never done any tampering with the software. Please give an update if you can fix your issue. I will not factory reset as I've seen others say it didn't help and it would render my device utterly unusable (because I can at least use some offline reading apps without WIFI etc.). I got this device in October 2023, and have used it daily with no issues until now..
[Lenovo P11] h4vok_xda:
yea one thing i know is a factory reset will most likely not work this is definitely a firmware issue my device doesn't even list a MAC Address I spent the last couple of days trying to flash ZUI 14 but i can't even unlock the bootloader i keep getting errors.
[Lenovo P11] h4vok_xda:
yeah can confirm factory reset does absolutely nothing tablet is still on zui 15 which is causing the problem no matter what drivers I try i cannot unlock the bootloader no matter what command (fastboot flashing unlock / fastboot oem unlock-go) I use i am returned an error. I have tried using bootloader fastboot and fastbootd in recovery mode. I am able to see the device in fastboot devices with the windows supplied kedacom driver and the generic adb driver you can manually apply through device manager but no matter what i can not unlock the bootloader. I have tried doing the sn.img technique aswell where i ask lenovo for a file to unlock the bootloader however that too does not work. I have OEM unlocking and USB tethering enabled in settings, I am honestly at loss on what to do, i have also heard that ZUI 15 does not let you unlock the bootloader: https://xdaforums.com/t/unlock-bootloader-zui-15-0-423.4663104/

any help would be appreciated.
[Lenovo P11] h4vok_xda:
also btw im using adb/fastboot version 35.0.1-11580240
[Lenovo P11] NeedHelpThanks:
This user: https://xdaforums.com/t/tb138fc-sd870-p11-pro-2022-wifi-issue.4649607/

Posted the same issue and was able to downgrade to zui14, but it didn't fix his issue. Things are looking bleak for us friend.
[Lenovo P11] h4vok_xda:
i think it may be because the device does not have a mac address when i look at my network settings there is not mac address present. If my theory is correct even if I were to use a usb-c to ethernet adapter the tablet still wouldn't be able to connect to the internet.
[Lenovo P11] NeedHelpThanks:
Since it seems that our problem has all risen from rebooting the device after charge, could it be some kind of failed power delivery to the device that has somehow damaged the WLAN module? Kinda weird how everything seems to be working though, except the WLAN. I resetted my WLAN/bluetooth settings already and alas it didn't change anything
[Lenovo P11] h4vok_xda:
there's no way its that very very unlikely, i think its just a basic firmware issue that was caused by lenovo's absolute incompetence, the most annoying part is that i cannot even unlock my bootloader. I ordered a usb c to ethernet adapter it should arrive friday/saturday i'll check to see if i can connect using that if i cannot its most likely a MAC address issue and if it is we'll still be out of luck as root is required to install the necessary tools for changing mac address. I am considering probably contacting lenovo support but they're probably gonna be no help since this device is all the way from China honestly just wasted £300 on this should've just spent the extra on an IPad.
[Lenovo P11] NeedHelpThanks:
Best of luck. Yeah, I think we might be screwed. I've already checked my serial number on the AU Lenovo support page, and they don't recognise it. Only the chinese lenovo site indicates I have warranty till 2025, but it would be difficult to arrange a repair service from them.
[Lenovo P11] h4vok_xda:
The ethernet to USB-C adapter arrived tried it on my phone it installs a driver and connects you to the internet, tried it on the tablet and it works! I can access the internet using the ethernet! However this is obviously not optimal and it won't let me update to a newer version of zui 15 as it says i have no internet connection leading me to believe that the installer checks for a wifi connection which is probably why it isn't working, similar to how Samsungs cant update over ethernet.
[Lenovo P11] NeedHelpThanks:
I'm so glad you were able to get it working even though it's not ideal. I got bluetooth tethering to work but its awfully slow obviously.

Sadly it's quite a hassle for me to run an ethernet cable to my desk, so I thought I might share this ridiculous idea with you incase it might interest you too. It gave me quite a laugh but I have a spare phone that I could just use. I'm still so sad it has come down to this :(

https://www.reddit.com/r/ipadmini/comments/zgnp7t
[Lenovo P11] buickman104:
Would a type c wifi dongle work?

Also when the issue happened was the tablet being charged? Is so what kind of charger were you using? What was the wattage? I asked because I'm working on the theory that something with a voltage fried the Wi-Fi chip maybe?
[Lenovo P11] Buenoo:
Hellooo,

I'm looking for one hub usbc with charge + several usb + ETHERNET but this last thing cant work :'(

I tried this ugreen below, another identical hub from aliexpress but ethernet cant work... I tried with an apple usbc to ethernet and it work...... but i need at least charging + ethernet..... any of you found one which is working ?

Many thanks !
[Lenovo P11] h4vok_xda:
No the voltage wouldn't fry the WiFi chip i heavily doubt it, even in the logcat output it says that the wifi couldn't start up due to no WiFi driver. There is a possibility but its highly unlikely. Btw i was using a 45w steam deck charger but once again wattage didn't fry it usb-c checks with a device if it can support the wattage otherwise it defaults to a lower wattage.

Honestly its probably because of a bug on zui 15 where lenovo messed up the firmware/wifi driver. I contacted IWS (Lenovo international warranty service) who weren't helpful they just said to ask wechat every lenovo rep i asked on lenovo forums just forwards me to chinese websites or wechat and i can't speak chinese. I might try wechat but you need a credit card to verify ur account which is kinda sketchy. I don't know what do at this point i could just verify but im probably gonna end up speaking to someone who doesn't know any english honestly just thinking of listing this on ebay as faulty and atleast getting 150£ out of it because a tablet with no WiFi is basically useless.
[Lenovo P11] h4vok_xda:
Not really sure i used a ugreen dongle too but it was only ethernet but honestly this should work, btw wait 30 or so seconds because it takes time for the driver to install it should give you a notification about usb power or something along those lines
[Lenovo P11] Buenoo:
I'have now waited all day long my friend ahah

I looked on ugreen if maybe they had any kind of apk driver idk ^^'

And it work instantly on my samsung s23 :'(
[Lenovo P11] NeedHelpThanks:
As H4vok said, its unlikely but can't be ruled out. In my case, the issue did happen when the device was turned on while charging (charging at 0%, powered on at 34% battery), and I started using the device after 5 minutes since dead because the charging is just so fast. I used the charger that came with the device which supported 68W charging. funnily enough, I had an ACER all-in-one PC in the early 2010s that had this exact same problem where one day the WIFI never worked again, and it was used with an ethernet cable for the remainder of its life.
[Lenovo P11] NeedHelpThanks:
Bought a ugreen usb-c to ethernet adapter after you and also happy to report that it works too! My PC is connected to wifi but I used the ethernet port on my PC to share the connection to my tablet. This will do for now but I hope we can find a permanent solution in the future
[Lenovo P11] NeedHelpThanks:
I just saw this now, but I bought the model 50737 and it doesn't come with usb C charging unfortunately, I didn't even think of trying to get one with usb C charging too. Maybe if you are able to find one, it would be good for you to report back if it works.