yashsingh1/xdaforums huggingface dataset:
[Lenovo P11] mistyque:
Hello everyone, I just acquired this superb tablet with a completely useless fake global ROM. The Play Store crashes and closes on its own without any crash report, the charging is limited to 30W, I chose the French language and half of the settings are in Finnish, Netflix is in Widevine L3.

The bootloader has already been unlocked by the seller, and I saw 3 ROMs on page 1. What is the difference between the 3? I am French, but I don't mind having a tablet in English if the Play Store works and there are fewer bugs.

Thank you in advance :)
[Lenovo P11] ZhenMing:
from my test, it had the same action like your video. But I checked in the battery status, it show charging.

If using high wattage charger, I got the turbo charge.
[Lenovo P11] wayneunique:
I'm looking to relock my tablet now I have put the original CN rom back on, where I have a few questions as I have tried your instructions but with no luck on the CMD.

1. Do I have a specific folder path to enter on the CMD as the default for me is C:\Windows\System32

2. I have updated the Android ADB driver, which shows in my device manager as "Android Bootloader Interface", do I need anything else to show up?

Many thanks
[Lenovo P11] kuya11:
Have you download the SDK platform tools?

SDK Platform Tools release notes | Android Studio | Android Developers

Android SDK Platform-Tools is a component for the Android SDK.

developer.android.com

You need to go to your platform tools folder in your cmd to run the commands.

I haven't been successful in relocking the bootloader so can't answer no 2. I would recommend you to get a copy of your sn.img prior to locking just in case it doesn't works and you need to unlock it.

Good luck
[Lenovo P11] wayneunique:
Thanks, got everything going well apart from the last part of the guide.

6. Type fastboot flashing lock. Your tablet will ask if you want to lock the bootloader. Use the volume up and down keys to select "Yes" and press the power button to confirm.

I typed "fastboot flashing lock" but in the cmd it states "FAILED (remote: 'unknown command')

fastboot: error: Command failed"

Any advice please. Thanks
[Lenovo P11] euphoriaa:
Hey guys, any feedback on ZUI15? All good?
[Lenovo P11] inhalt:
Hi. The same happened to me... While charging, it'd make the plugging sound over and over again. Found out it was the USB cable, because it won't happen when using my OnePlus cable compatible with 150w charge.
[Lenovo P11] inhalt:
So far so good. I'm only having trouble trying to use a Bluetooth keyboard. All's working fine aside of that.
[Lenovo P11] inquisitor:
Hello world,

I tried to go back to the stock Chinese ROM on my TB138FC bought from Aliexpress with a Global ROM pre-installed by downloading TB138FC_CN_OPEN_USER_Q00024.0_S_ZUI_14.0.625_ST_220901_qpst from https://mirrorace.org/m/6BuwR but strangely this has changed my serial number to 72be733f which differs from the serial number printed on the back of the device and from what FastBoot Mode showed previously whilst the global ROM was running.

Any ideas how this could happened and especially how to get back my original S/N?

P.S.: I locked and unlocked my device a couple of times and noticed that upon unlocking I get the error message FAILED (remote: 'Serial number not matched') although I'm definitely using the correct SN.img file which if opened in the text editor shows the original S/N in row 5.

My objective is to relock the bootloader and restore factory condition so I can enjoy OTA updates.
[Lenovo P11] Alexislol2001:
Hi, thanks for your reply, so you are using the original 68W charger with the OnePlus 150W cable?

Bruh, I bought 2 100W Anker cables and both have the same problem as the original, I thought it might be the charger, the port or the software problem, because I supposedly ruled out the problem with the cable with that one.

But I must have thought those two cables were low quality even if they were 100W and from "Anker", since they cost me about $15 for both of them.

Can anyone recommend good cables? I can't find where to buy that OnePlus 150W cable. I'm really disappointed that the original cable came defective, although it would have been worse if the charger came defective.

By the way, I bought those two cables on Amazon, it was my first purchase on Amazon and the truth is I haven't bought much online, I don't know much about this and I was wondering, can they give me a refund or exchange for ones that work well? I have had these cables for over half a year now.
[Lenovo P11] inhalt:
Exactly, I used the OnePlus cable with the original 68w charger.

You could try asking Amazon's customer service, they might exchange the cables or even give you a full refund.
[Lenovo P11] Alexislol2001:
Thank you very much

The OnePlus cable is the red one?
[Lenovo P11] wayneunique:
Anyone else managed to lock the original BL after changing to the original Chinese ROM?
[Lenovo P11] inhalt:
Yes, it is 👍
[Lenovo P11] inhalt:
I did 🙋
[Lenovo P11] wayneunique:
Great. From the guide within this forum I got everything going well apart from the last part of the guide.

6. Type fastboot flashing lock. Your tablet will ask if you want to lock the bootloader. Use the volume up and down keys to select "Yes" and press the power button to confirm.

I typed "fastboot flashing lock" but in the cmd it states "FAILED (remote: 'unknown command')

fastboot: error: Command failed"

Did you do the same method? Thanks
[Lenovo P11] inquisitor:
Which ROM did you use and from where did you download it? Did you have any issues with the S/N?
[Lenovo P11] inhalt:
I didn't have any problem locking the bootloader. Make sure you've installed the right fastboot drivers (I posted the driver that worked for me)
[Lenovo P11] inhalt:
No problems here. I downloaded the original Chinese rom from this thread... It is somewhere within the first posts.
[Lenovo P11] kobra_89:
Same error to me.. anyone find solution??

oem unlocking on developer options is activated

My tablet it is not bricked, I can go to os if I have to do somenthing else

I obtained sn.img also.. so I did that:

fastboot flash unlock sn.img

Warning: skip copying unlock image avb footer (unlock partition size: 0, unlock image size: 5386).

Sending 'unlock' (5 KB) OKAY [ 0.009s]

Writing 'unlock' FAILED (remote: 'unknown command')

fastboot: error: Command failed

I can't understand why..
[Lenovo P11] wayneunique:
I've used the fastboot drivers you provided and still no joy.

Did you use the last command 'fastboot flashing lock' for the tablet to relock, as that is only the last part that doesn't work for me?
[Lenovo P11] inhalt:
I think I did use that command, although I'm not 100% sure... Are you on Windows 10? I read it wouldn't work out with other Windows versions.
[Lenovo P11] wayneunique:
I'm on Windows 11 so would be interesting if someone else has managed to do it via that version of Windows.
[Lenovo P11] Ledesma90:
I tried the "fastboot flashing lock" command and I confirm that the command worked for me, it showed me a message where I could choose if I did not want to block and the second option to block, you could give More information about what error does it show you?
[Lenovo P11] mooms:
They are mirrors, it's the same file.
[Lenovo P11] mooms:
Nothing special, except that the taskbar buttons are now on the right, it's a weird choice.

Also, I have a bug with Nova Launcher, the Home button is not working, I must press the III first to be able to use the Home.
[Lenovo P11] eschwin:
does anyone have a working ''zoom camera'' ?? i downloaded the app on the playstore but the camera gives Green lines and green colors? can anyone check for me if they have it to?

the back camera and selfie camera works good on the normal camera app, even if i switch ''hd video '' on in the zoom app settings...

thanks for testing!
[Lenovo P11] Looking for Gold:
Hello everyone. Thank you so much for such good information about the tb138fc! I have purchased the model with the fake global rom and I will try to flash it to the original firmware, the problem it's that I'm a noob in this things and I'm concerned about transforming my tablet into a brick 😬

Does anyone know a video tutorial or a site that have images for me to follow? I'm really lost with so many programs and steps and without a image reference I'm concerned about the integrity of my tablet 😕

Also I'm trying to find a working pen for the tablet but couldn't find one that costs less than 80€, there's any alternative?

Thank you for your help and time!
[Lenovo P11] Ledesma90:
Hello friend, I can help you by telegram, I am going to give you the programs, and I am going to guide you step by step, I have not flashed this model yet, but I already did it on the y700, tb371fc. If you want my help, let me know.

Greetings
[Lenovo P11] inquisitor:
As nobody seems to have my issue or an answer to the same, let me ask two more questions:

Do those of you who purchased a device with Global ROM pre-installed see the same serial number in the boot loader menu as is printed on the back of the device?

Does anyone else have the same serial number as me (72be733f )?

Since my earlier post I generated a SN.img using the serial number shown in the bootloader menu (as opposed to the S/N printed on the back) and I succeeded locking it with that one but then the device still won't boot as it says the system is corrupted.
[Lenovo P11] Ledesma90:
This happens due to version verification, when you block it has to be a higher version than the one you have already had https://note.com/calm_hebe587/n/n8365967515bd
[Lenovo P11] Ledesma90:
Out of curiosity, what command did you use to block the bootloader if you did it with a sn.img? In your case it would have been enough with "fastboot flashing lock"
[Lenovo P11] inquisitor:
Thanks. So I either need to overcome Android Rollback Protection for which I can't find any guide for our device or I need to find a stock ROM of ZUI15 which unfortunately I cannot find either. You would not have any idea where I could get either of the two?

I used the LockUnlockBootloader script I found somewhere and it runs the following commands:

.\tools\fastboot.exe oem lock-go

.\tools\fastboot.exe flashing lock

Any help to get a stock ZUI15 ROM or overcome rollback protection is highly appreciated!

P.S.: So I made another interesting discovery: While the Bootloader Menu shows an altered serial number (72be733f) the Recovery Mode still shows the device's original serial number printed on the back of the device. Also once booted into ZUI14 Android also shows the original S/N under Settings > Status > Serial Number as does the ADB command adb get-serialno.

While I can't rule out that Android Rollback Protection would also flag the flashed ROM as corrupt, as Ledesma90 suggests, I fear there's a bigger issue caused by the mismatch between the S/N in the Bootloader vs. Recovery Mode/booted Android.

I also realized late that the seller on Aliexpress ("Factory Direct Collected Store") actually states that the S/N is modified.

So obviously there are two different places where the S/N is stored - one where the Bootloader gets it from and one where Recovery Mode and Android do. The question is where the Bootloader retrieves the S/N from and how to undo the change and get back to my original S/N.

Since I suspect the Bootloader S/N might come with the stock ROM shared in the first post of this thread, it would be helpful to narrow down the storage location of the S/N. For that purpose I would appreciate if anyone who flashed it could boot into Bootloader and confirm whether they see (a) the same S/N as I (72be733f) or (b) a different S/N matching the one printed on the back of the device or (c) a different S/N

not

matching the S/N on the back.

I'm surprised nobody else here has run into this issue as it seems like many here have also bought the device on Aliexpress from "Factory Direct Collected Store".
[Lenovo P11] Ledesma90:
I have 2 tb371fc, the 2 do not match the sn on the box with the bootloader screen, the 2 were purchased with the original rom

My tb138fc does not match the sn on the box with my bootloader screen (purchased with modified rom)

My y700 2023 matches the "sn" on the box with "sn" bootloader (purchased with modified rom)

My y700 2022 matches the "sn" on the box with "sn" fastboot (purchased with rom original)

Can you share your LockUnlockBootloader script?
[Lenovo P11] Ledesma90:
The Chinese rom have ota updates? Did anyone manage to successfully block the bootloader?
[Lenovo P11] ZhenMing:
OTA works...
[Lenovo P11] inquisitor:
Interestingly my device flashed with the stock ROM from the first post of this thread seems to get OTA updates despite the bootloader complains about being unloacked upon booting. It has just updated to 14.0.831 ST and now offers 15.0.259 ST for download.
[Lenovo P11] wayneunique:
I've still not managed to re-lock the bootloader so I can enjoy L1 Netflix and Amazon Prime.
[Lenovo P11] Ledesma90:
Most likely, one of those versions will let you lock the bootloader with your script.

If you try to block the bootloader in the latest version, please share the information with me.

When you can, please share the script.

Thank you
[Lenovo P11] Ledesma90:
With my 2 y700 2022 and y700 2023, I updated to the latest version and then executed the “fastboot flashing lock” command in the bootloader and I was able to have Netflix and Amazon. I didn't try anything on the tb138fc because it is my dad's tablet. If you try, share the result in this thread.

Greetings
[Lenovo P11] justhelpme24:
Anyone know what microsd card should I get for this? Also what's the max speed and storage that it accepts?
[Lenovo P11] inquisitor:
I got it from this post relating to one of the predecessors, the Xiaoxin Pad Pro 2021 [TB-J716F], and this is the direct download link: https://www.mediafire.com/file/51352hr83iz87g5/LockUnlockBootloader.zip/file

Bingo! Indeed after running the OTA update to 14.0.831 and then locking the bootloader from fully booted state (Android running as opposed to Fastboot) it actually did lock and no longer says the system is corrupted. Apparently these OTA updates restore the S/N altered by the Aliexpress sellers.

Also the subsequent OTA update to 15.0.259 worked flawlessly. My device is now back to factory condition running the stock ROM and with a locked bootloader meaning I get OTA updates and have DRM Widevine L1. After installing Google Play I was also able to get all my essential apps including Netflix. Mission accomplished! Thanks for your valueable input @Ledesma90! Send me your PayPal address by PM so I can tip you.
[Lenovo P11] kuya11:
Hi,

Which fastboot driver did you use after the update to 14.0.831? i tried the batch command but after updating it doesnt detect the fastboot device anymore.

Thanks
[Lenovo P11] inquisitor:
I used the "Marshall London Composite ADB Interface" version 11.0.0.0 dated April 9th, 2015 which I believe came through Windows Update (I used an up-to-date Windows 10 machine).

Make sure you confirm the pop-up on your tablet asking whether to enter debug mode after you plug in the USB cable before you execute the ADB/fastboot command from your computer.
[Lenovo P11] mooms:
Any micro SD should work. Just buy the one you want.
[Lenovo P11] kuya11:
Thank you for this. I did the windows optional driver update and confirmed I successfully locked the boot locker with updated ZUI 14.0.831
[Lenovo P11] gwangsama85:
Hello. guys

Are there anyone whose Wifi don't turn on?

I tried to factory reset and flash rom(zui15 > zui14).

I can't Using Wifi.(when I touch the wifi enable button, It does;t work.
[Lenovo P11] ZhenMing:
Could you share how you get the driver updated through windows update?
[Lenovo P11] kuya11:
Sure. When it boot into fast boot my windows shows unknown android device.

I go to settings - windows update.

click on view optional updates

expand the Driver updates

check on the ones that you think is the android device or just all of them.
[Lenovo P11] ZhenMing:
Marshall driver download:

Download Marshall ME-700 USB Driver (official) for Windows

Marshall ME-700 USB Driver helps you to connect your Marshall Smartphone and Tablets to the Windows Computer and transfer data between the device and the computer.

en.usb-driver.net

Hopefully this work, if anyone willing to try...
[Lenovo P11] RealDeal211:
Guys i got a problem, i wanted to flash via qfil and nothing works i used the rom from the 3. link and did all settings like the guys in the video but every time i get the Sahara Fail pls help i hate the pseudo global rom :(
[Lenovo P11] euphoriaa:
After updating tov15.0.259, the taskbar is always visible at the bottom of the screen. Does anyone knows how to hide it away?
[Lenovo P11] Ledesma90:
Can anyone confirm if system_locales still works in version 321 to change the language?
[Lenovo P11] justhelpme24:
Got an SD card but can only use it as an external storage and not internal? When I set it up the option for device storage is greyed out why?
[Lenovo P11] iceflower:
Try to reboot the device. For me it got accepted as internal without actively choosing something.
[Lenovo P11] euphoriaa:
Was thrilled when I saw - 5. Adjust And optimize the small white bar UI at the bottom, but it ended up Lenovo just adjusted to make the bar occupy the screen slightly less without any option to completely hide it like Zui14.

Still looking for a solution to completely hide or make the gesture bar transparent.
[Lenovo P11] inquisitor:
I remember my device running ZUI15 asking me whether I wanted to use my SD card to "transfer media" or to "expand storage" upon first insertion. Not sure if there's a way to trigger that dialogue afterwards.
[Lenovo P11] justhelpme24:
Yeah that's what I get but the expand storage option is greyed out
[Lenovo P11] inquisitor:
Could it be that the device has some technical requirements with regards to the microSD card's capacity or performance (i.e. UHS Speed Class) which your card is not compliant to and that is causing the grey out?
[Lenovo P11] alialaradi:
Hello, i followed this steps and everything was fine but after it finished the download the tablet did not boot, i tried to start it manually after a few minutes with the power button but nothing happened.

now i cant start it and its not recognized when i plug it to the pc, any idea what i can do?

i tried to hold "+" button and plug it, but it still did not get recognized, the only signs of life i get is when holding all the buttons together (power "+" "-"), i get a very short vibration but still it does not boot or get recognized.
[Lenovo P11] inquisitor:
Try pressing Power, Volume Up and Volume Down - so 3 buttons at once - for a very long time (30 secs) as in below video. This should reset and revive your device.
[Lenovo P11] alialaradi:
i tried this but it just keeps vibrating every 15 seconds and nothing happens.
[Lenovo P11] inquisitor:
Try pressing just Power + Volume Up for 30 secs. My tablet was in the same state and I already started panicking but after pressing some combination for a very long time it booted again.
[Lenovo P11] alialaradi:
Nothing happened with this combination, I am starting to loss hope honestly:(
[Lenovo P11] wikih1993:
Hello guys, i have a question. Does anyone have the apk for Lenovo home from real one global rom or maybe know how to change the Chinese advices in the search box on main screen?
[Lenovo P11] wayneunique:
I'm still having issues with locking the bootloader after reverting back to the Chinese/English original rom.

Can I use the Lenovo recovery software to revert my tablet back to it's original state?

Thanks
[Lenovo P11] Ledesma90:
Confirmed in version 321 system_locales still works, update without fear
[Lenovo P11] Ledesma90:
How can I verify what type of storage I have activated?
[Lenovo P11] iceflower:
No idea honestly, the device is capable to use SD Card as internal. But for example Netflix is not detecting it.

Found this but cannot verify: https://gist.github.com/mvidaldp/84926c3e6e0d980a9833d8dbee93f0c8
[Lenovo P11] Looking for Gold:
Hello guys! I have been able to put it back with the original room. I'm trying to block the bootloader so I can have L1 widvine, but I'm getting a bit lost in the process. Does anyone have made it?
[Lenovo P11] Urban03:
Can anyone help me? While trying to flash the original firmware via QFIL, I got this error:

"Download Fail:FireHose Fail:FHLoader Fail: process fail"

Edit: Files from second link worked fine.

I also managed to lock the bootloader in version 14.0.831.

Should I also uncheck in developer option "OEM unlocking"?
[Lenovo P11] inhalt:
Hi. Is this something to do with changing the system language? I couldn't find a proper guide so had to use Morelocale2+adb... Could you explain or link to the procedure? Thanks.
[Lenovo P11] Thigamans:
I faced the same problem after flashing 14..820 with QFIL, turns out the problem was that I was only selecting rawprogram_unsparse0.xml in QFIL. I saw a suggestion that you should select all XML files in the folder by dragging them, I tried that and voila! I had wifi again.
[Lenovo P11] oksza:
Hey everyone, please can someone help, I think I've bricked mine after QFIL flashing.

I have recieved my machine few days ago with unofficial global ROM and unlocked BL, and tried to flash Chinese one in the first link pages to get Widevine L1.

No dice, I either get dreaded "Sahara fail" or the process just stops completely in flashing mode (I've waited for about 30 mins before stopping QFIL).

I've tried:

- flashing on Win10 instead of Win11

- flagging "Reset State Machine" in QFIL config

- running QFIL as admin

- swapping original cable to make sure it's not damaged

- placing ROM contents in QPST/bin folder

Is there anything else I can do?
[Lenovo P11] TEK023:
try this qfil instead

qfil

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com
[Lenovo P11] ajandrade:
Guys, I'm thinking about buying the tb138fu, but I couldn't find a forum about it. What's the difference between this one (tb138fc)?
[Lenovo P11] Anhhd1811:
Pls help me…

I cant find any rom support netflix widevine L1 for this tablet.
[Lenovo P11] gabif_0:
Has anyone found solutions to this problem?

After using it for a few days, same thing happened to my tablet
[Lenovo P11] oksza:
Thank you, tried this one, but got SaharaFail again.
[Lenovo P11] TEK023:
I used to " hard brick " really completely dead p11 pro 2020

I somehow make it to enter 9008 with debrick usb cable it's got sahara fail also

so i decided to open the tablet for another try and it completely ripped off the display cable

tablet is done and dusted

so if your device can still got into 9008 there is no way you can't flash it just find proper qualcomm usb driver and right flash program you should be okay
[Lenovo P11] thugo07:
The roms posted here work but to obtain the netflix L1 certification you need to lock the bootloader
[Lenovo P11] Anhhd1811:
Tks you, i’ll try it
[Lenovo P11] oksza:
Thank you, I've managed to boot back using 15 sec "VOL-" + "POWER" combo. Still not able to flash the CN rom, will keep trying.
[Lenovo P11] LakersDroid:
I've managed to flash the original ROM back on my Xiaoxin Pad Pro 2022 with modified Global rom 14.0.820 and relock the bootloader by following the tutorials within this thread. So now I get OTA updates and Widewine L1 Netflix.

Thank you to the fellas who provided the tutorials. :)

I used the file in link#3 and QFIL. I'll be happy to help those who are having trouble with flashing the stock Chinese rom on their tablet and with relocking the bootloader.
[Lenovo P11] RealDeal211:
Hey guys, I'm having trouble flashing a CN Rom with QFIL. Every time I press 'Download,' it prompts me to start the tablet in FFBM Mode. After clicking 'Download Content,' the tablet restarts but consistently fails. I'm feeling really frustrated. Can someone please provide a step-by-step tutorial to guide me through this process?
[Lenovo P11] wikih1993:
I propose to you to create step by step tutorial.