yashsingh1/xdaforums huggingface dataset:
[Lenovo P11] Reneedragon:
Just booted up my tablet this morning and started the have the same issue as everyone else. WIFI stopped working and WLAN is off and won't turn on. Very annoying considering that it seems everyone is struggling with the very same issue and Lenovo refuses to acknowledge this issue. It seems the Tab 11 Pro Gen 2 users are having this very same issues on reddit with no solution in sight from as early as April. It seems all attempts by said users to contact Lenovo support have been without luck as Lenovo denies any such issue and refuses to help the users with the dumb generic response (Please check your wifi/modem and thus completely ignoring and denying the the tablets wifi adapter stopped working).

Is there any way to force Lenovo's hand and have some media outlets/sites cover and reach out to Lenovo themselves? It seems like they're trying to pull an Asus move.
[Lenovo P11] RealDeal211:
Hello Community,

I’m encountering an issue while trying to lock the bootloader on my ZUI 15 tablet. I’ve entered Fastboot mode, and my device is recognized in the command line. However, when I input the command fastboot flashing lock, it fails with the error message “FAILED (remote: ‘unknown command’)”. I’ve confirmed that my device is in Fastboot mode and is detected by the fastboot devices command.

Has anyone faced a similar issue or can provide guidance on how to resolve this? Any help would be greatly appreciated.

Thank you!
[Lenovo P11] Ledesma90:
There are many such cases and all these cases are presented in zui 15, In version 15 they usually remove the lock command, most likely you can't do it anymore
[Lenovo P11] nodefinitelynot:
Yep I think they disabled most fast boot commands on zui 15. I never tried to lock it but I couldn't unlock it or really run anything in fast boot on zui 15. It worked on zui 14 though
[Lenovo P11] Reneedragon:
Any fix to wifi yet?
[Lenovo P11] mamad2000:
Delete my post
[Lenovo P11] jonathonsunshine:
Is it possible to roll back to ZUI 14?
[Lenovo P11] nodefinitelynot:
I managed to roll back from zui 15 to zui 14 but it wouldn't boot up until I unlocked the bootloader. So you'd lose like high resolution and safety net stuff. If you're going to try it, make sure to enable OEM unlocking in developer settings before trying it or you could brick your device
[Lenovo P11] ProZzz:
I cant connect my tablet with my windows 11 pc (it says usb device not recognized) whenever I use C to C cable. Also does this tablet support C to HDMI output? Many thanks
[Lenovo P11] porphyrin:
The tablet does support USB-C to HDMI output: 1080p60 and 4Kp30
[Lenovo P11] jonathonsunshine:
Can I ask generally how you did this ? I have TB138FC_CN_OPEN_USER_Q00024.0_S_ZUI_14.0.625_ST_220901_qpst.rar which I got from this thread
[Lenovo P11] jonathonsunshine:
Can I ask generally how you did this?

ADB or the Lenovo software or...?

I have TB138FC_CN_OPEN_USER_Q00024.0_S_ZUI_14.0.625_ST_220901_qpst.rar which I got from this thread
[Lenovo P11] nodefinitelynot:
I ended up having to use qfil to install the firmware. I followed this tutorial here https://xdaforums.com/t/install-stock-rom-xiaoxin-pad-pro-2021-tb-j716f.4347951/

Except using a xiaoxin pad pro 2022 firmware.

Also, make sure you enable OEM unlocking in developer settings before flashing. On my device once I'd rolled the firmware back, it didn't accept the unlock file from Lenovo and I had to unlock with "fastboot flashing unlock"
[Lenovo P11] ProZzz:
ZUI 16 is out. Anyone knows how to get it? I doubt this tablet can have ZUI 16 :'(
[Lenovo P11] ZhenMing:
Finally my tablet is dead. It just turn off by itself and never able to turn ON again.

Only the power button guest the tactic vibrator feedback when hold on it. And it just repeat itself. Just like turning ON, but off later, then turn ON again, like symptom.

Charging also similar, it just ON OFF ON OFF repeatedly.
[Lenovo P11] jonathonsunshine:
Welp, scary day but managed to roll back from ZUI15 to 14 with QPST, unlock bootloader and install Pixel13 GSI. Seems to work, can't access 2.4GHZ Wifi but I can live with that.
[Lenovo P11] inquisitor:
My TB138FC just got the update to 15.0.388 which comes with the below change log:

Is there a change a way to check the Android security patch date?
[Lenovo P11] justinh99:
How often does the Chinese version get updates?

Can't you see the andeoid version + security patch in the settings?did wifi work for you ?
[Lenovo P11] justinh99:
Did they removed the unlock command too?
[Lenovo P11] inquisitor:
I think that's the second update I got since I got my device in December, so in 7 months.

I do see the Android version (see below) but no information on the security patch date.
[Lenovo P11] justinh99:
Will lenovo give so few updates to the global version?

Try to read the security patch with programs like cpu-z or tap on Android version (1 time) in the global firmware a menu opens where the googel play security patch +android security patch is written
[Lenovo P11] euphoriaa:
Hi, can you provide a review on this update? Is it a much needed improvement?

My current gripe with zui14 is how big the top bar is. And the line bar at the bottom with no settings to turn it invisible like Samsung's. These 2 effectively make the experience less immersive.
[Lenovo P11] inquisitor:
Tapping the Android version takes me to the screen shared in my previous post showing just Android and Kernel version, but CPU Z was a helpful hint:

With regards to the "global version" there is no such from Lenovo, at least not for the Chinese Xioaxin Pad Pro 2022. If you mean the Lenovo Tab P11 Pro Gen 2 (which comes with at least a different CPU), I have no clue as to how frequently it gets updates.

I have not noticed any difference and the changelog I posted earlier does not suggest anything beyond but a few bugfixes. Wifi is stable but relatively weak - out of all my wireless devices the TB138FC performs worst (4-5dBm weaker than my Samsung S22 Ultra).
[Lenovo P11] Ledesma90:
In some cases they are also removed, only by testing it will be possible to know, but I believe this method is still valid: https://m.zui.com/iunlock. Greetings
[Lenovo P11] Ledesma90:
Could you confirm if setedit still works to change the language with system_locales in this new version?
[Lenovo P11] johnny elevator:
What do I select here?

****

What do I select in these 3 areas of qfil?

tb138fc

running 14.0.820st

android 12

unlocked bootloader (I see the message when I restart the tab)

oem unlocked selected in developer option
[Lenovo P11] inhalt:
It's under settings/security. 1st of April 2024.
[Lenovo P11] johnny elevator:
I tried flashing it via fastboot. Unfortunately I get a failed flash of the persist.img. What am I doing wrong? Note: all other img flash fine.
[Lenovo P11] iceflower:
Got this update too, surprisingly without any VPN.
[Lenovo P11] fry_35:
The QC is 30W and not 68W, maybe it will be an issue...
[Lenovo P11] Good Man1:
Have you tried activating desktop mode using key options as shown in this link https://www.androidsis.com/iw/taskbar-modo-escritorio/ and in this one https://androidayuda.com/iw/asi-puedes-activar-modo-escritorio-android-q/
[Lenovo P11] Marcip@n:
Hi! A new Lenovo Xiaoxin Pad Pro 2022 (SD870, model TB138FC) user here.

What is latest update? I tried to connect VPN to China but did not find any update. (My tablet is running 14.0.625)

I have already installed Google account (followed the highlighted steps), everything seemed perfect, but it turned out the tablet does not recognose any 5 GHz wifi network, and connected to the 2,4 GHz network through Wi-Fi 4 protocol. How can I check wether it is a warranty issue or a simple set up problem?
[Lenovo P11] tonychua:
This device - since it is from China - uses different 5GHz channels than the ones your router is providing. Thus, it does not see any of your 5GHz SSIDs.

I am also at 14.0.625 right now. I also tried to update using the CN VPN but no luck. So we might be at the latest version.
[Lenovo P11] euphoriaaaa:
Same here. SD870 2022 version on 14.0.025.

Seems very stable after 3 days of use. Never once crashed.

Only thing lacking is the productivity mode.
[Lenovo P11] Marcip@n:
Hello @tonychua!

Thnaks for your feedback! Do You think, do You know any solution to change the wifi channel set up in order to use the European "standerd" channels and thus the wifi routers?

Since the tablet is not capable for mobile data transfer I'm thinking to purchase a wifi hotspot and/or extender. Do You think it is worth to purchase a Chinese product whicj works with Chinese wifi chanell set up?

Thanks and regards, Marcip@n
[Lenovo P11] tonychua:
I believe that with the Chinese ROM, 5GHz channels from other regions will not work.

A Chinese wifi hotspot may work on your tablet's wifi but may not work with your region's mobile frequencies.
[Lenovo P11] Marcip@n:
Thanks again! It seems that the European and Chinese 5GHz wifi chanells are complementary, opposite of each others. A Chinese ROM can work well with a wifi router (and its 5GHz chanells) set up for USA region. (I tested and my tablet recognise and work through WIFI 6 protocoll with a router set up for USA.)

Unfortunately my Telekom router is set for European region and can not be changed/modified.

What channels are supported in both the 2.4 GHz and 5GHz band in most countries? | Laird Connectivity is Now Ezurio

The channels that are supported depend on the regulation in each country. Here is a summary of most countries:Indoor Use Only, Radar Bands (DFS band)	Region	2400 to 2483.5MHz	5.15 to 5.25...

www.lairdconnect.com
[Lenovo P11] euphoriaaaa:
I have the exact same model and firmware as you. I notice the tablet was able to recognise the connection as 5Ghz automatically.
[Lenovo P11] ZhenMing:
This was with the ZUI14 ROM.
[Lenovo P11] ZhenMing:
This is for Android 13. We are currently on Android 12 with ZUI14 at the moment.
[Lenovo P11] ZhenMing:
I did not face any WIFI 5G issue with different router so far. The competibility could be the issue...
[Lenovo P11] ZhenMing:
The current firmware is 14.0.625. there wasn't any OTA for higher rev no, yet.
[Lenovo P11] euphoriaaaa:
Has anyone had success in using the Smart Split - the same application, dual screen display function?

Seems like a good feature where you can have 2 different view of the same app.

Have no luck in activating the feature so far.
[Lenovo P11] Good Man1:
I didn't understand, what did you do with ZUI 14, the global ROM or creating a Google account?
[Lenovo P11] Good Man1:
I think it appears in those links that it is supported from Android 10.
[Lenovo P11] Good Man1:
Try the Taskbar app from the Google Play Store, I think among the other things it offers there is also what you want.

Let me know if it helped you.
[Lenovo P11] mafury:
I have active pen 3 and not working with this model :(
[Lenovo P11] euphoriaaaa:
You are right. I notice the greenish tinting at 120hz. When I switch to 60hz, the green tinting disappear.

It is particularly obvious while watching Netflix with dark scene at 120hz. Black look crushed + green tint on specific area of the screen. It is as if the backlight were turned on by error and produces the green tint.

Hope lenovo acknowledges this flaw and fix it via software update!
[Lenovo P11] MiOBi:
Hi all :)

I have received this tablet and encountering display tearing, it's like the display is "cut" in half,

and the updates are delayed between the two halves, if that makes any sense...

Do you think this is a software / firmware problem, or is it an obvious hardware problem?

It's just that I'm not sure whether or not this was happening when I originally received the tablet (which firmware was 2 versions prior to the latest one), or since I have updated it to the latest OTA firmware. (14.0.625)

I tried to reset the tablet and that didn't help, I thought maybe reflashing the firmware if that's a software problem...?

Thanks for any advice!
[Lenovo P11] euphoriaaaa:
I feel this might be hardware defect.
[Lenovo P11] MiOBi:
Thanks, I think so too, but I 50% believe / remember it was not happening when the tablet first arrived,

meaning before I updated via OTA to the latest firmware...

Is there a way to manually reflash the firmware / go back to a previous one?
[Lenovo P11] ZhenMing:
It should work. I'm using one of them.
[Lenovo P11] ZhenMing:
As it said...
[Lenovo P11] ZhenMing:
This looked like a HW problem. Possible to do Reset Default to see if you had the same problem?
[Lenovo P11] ZhenMing:
Basically we could not find an English ROM for this tablet except the ZUI14 which runs on Android 12.

However, the sibling which carries 1300T SOC (TB132FU), there is a close to pure vanilla ROM. No luck for our TB138FC
[Lenovo P11] MiOBi:
Yes, I did perform a Factory Reset but that did not change anything.

However, having said that, I somewhat remember that during the hours before I performed the firmware upgrade,

the display was showing fine and properly, and after the firmware update it started to behave like that...

This is why I wanted to make sure by reinstalling the firmware or going back to an older one,

but as I understand, that is not possible with our version of the tablet for we haven't the original ROM?

Is it not possible to install the Chinese version for Mediatek?
[Lenovo P11] ZhenMing:
I don't think the Mediatek 1300T ROM would support on our tablet. And not adviceable to try flashing that too.

Let's search from the internet for the OTA firmware download.
[Lenovo P11] euphoriaaaa:
Has anyone found a way to manually set the screen refresh rate to 90hz or 120hz?

This is because with the 120hz selected from Settings, it seems that lenovo has programmed it to turn on some dynamic effect at the same time, which creates a greenish hue, destroying the blacks in movies.
[Lenovo P11] euphoriaa:
Have you found a solution to the green tint issue?

The only way to not have the green tint aka crushed black with video or movies is to switch to 60hz.

But we lose the smooth scrolling the 120hz gives!

I am now exploring if there is any chance to manually enable 120hz instead of turning it on from the setting. This is because from the settings, it does mention that 120hz turns on certain 'dynamic effect', which I believe is a certain backlight that causes the green hue.

So far I have tried the 'SetEdit' app and manually changed the refresh rate value to say 90hz but to no avail.
[Lenovo P11] tonychua:
I have not found a solution. I am always at 60Hz with at least 50% brightness for the tinting to be unnoticable. This also works at 120Hz.
[Lenovo P11] inasense:
That is a very useful link - thank you for sharing. I had the same issue but being in the US with a modem which allows channel switching I was able to remedy it by manually setting the channel within the China range. Shame about public wifi, though...
[Lenovo P11] euphoriaa:
Not sure if app like the PWMfree will fix the green tint issue.

[APP] AMOLED PWMfree

Summary: A simple application that uses a transparent overlay to dim the device brightness, effectively removing PWM. Download PWMfree More Information: Why PWM is such a headache Brief explanation about PWM Default brightness control...

xdaforums.com
[Lenovo P11] mitochondria72:
Does legion assist wide vision work? Playing LOL WILD RIFT on my Lenovo Xiaoxin pad pro 2022(MTK KOMPANIO ver 14.0.691) and it doesn't work.
[Lenovo P11] itsLevis:
New TB138FC user here with Chinese ROM. Is it possible to set up multipe users in this nice tablet?
[Lenovo P11] ZhenMing:
Good question, but not found so far... Anyone?
[Lenovo P11] Androidiminlove:
Keep using my Samsung Tab S6 or change to Lenovo Y700 or Lenovo Pad Pro 2022 instead? (long post, sorry)​

Would it be better to keep my Samsung Tab S6 (6GB RAM, SD855) or change to the Lenovo Y700 (12GB Ram, SD870) or the Lenovo Pad Pro 2022 Snapdragon version with 8GB?

The most important thing to note is that I DO NOT plan to use the tablet ONLY for emulation and video games. I recently learned how far emulators have come.. and that it's now possible to emulate PS2, Wii/Gamecube, and even some Switch games with a strong enough processor. I think it would be fun in the near future to play some games from these systems on my tablet. I tested it on the S6 Tab and some games run.. but there is some stutter. Not sure how much things would improve if I go for one of the Lenovo tablets mentioned?

However, 50% of the time I use my tablet for watching YouTube Premium.. and I also use my tablet while traveling or taking long flights.

The Tab S6 is a good, light tablet.. but the RAM is pretty slow (by 2023 standards) and the processor could be better.. I've read the SD870 is about 30% better in terms of playing games and emulation, etc.

If you were me would you keep the Samsung Tab S6 or would you switch to the Lenovo Y700 (I'm eyeing the 12GB model) or the Lenovo Pad Pro 2022 Snapdragon version with 8GB?

I don't have any way of testing the Lenovo tablets before deciding.. so I'm having some trouble making a final decision whether to go through the purchase of one of the Lenovo tablets or just stick with what I've got. I'd love some thoughts on this please.

Other things to share.. I'm sad the Y700 doesn't have built in GPS.. as I use this a lot especially when flying.. like for example, checking location on map.. or traveling outdoors when offline. I would be a bit sad I think not to have GPS.. but perhaps I don't need it 90% of the time so that's ok? I also just realized that the Y700 also doesn't have a fingerprint reader. So how do people log into their Y700 quickly and easily without a fingerprint reader? I do think it would be cool to have a powerful tablet the size of a book.. but I worry about these two missing things.

I read on the XDA forums recently how the screen of the Lenovo Pad Pro 2022 has some weird green hue that mutes blacks when it's set to 120hrz.. is that right? If so that would almost destroy the point of choosing that tablet (for the OLED screen).

Any other recommendations are welcome! I'm in Singapore (as a tourist) so I have pretty easy access to buying the Chinese versions of the Lenovo tabs.. the Y700 here cost about $350 USD and the Pad Pro 2022 8GB costs around $380 USD.

thank you!
[Lenovo P11] itsLevis:
I've tried launching the multiuser menu (com.android.settings.Settings$UserSettingsActivity) with "Activity Launcher" and it doesn't open 😔
[Lenovo P11] Marcip@n:
Hello! Can anybody check (probably on Chinese sites) the Android Upgrade Matrix for TB138FC tablet? This website/list does not contain any information about it. https://support.lenovo.com/us/en/solutions/ht501098-android-upgrade-matrix

Did anybody manage to install antivirus or any Launcher app on TB138FC tablet? (As I understand with the API controll and accessibility setup could be some issue on Android 12 and I'm hoping it will be solved in Android 13.)
[Lenovo P11] ZhenMing:
I red in Chinese website before saying that it will go up to A13. Possible might have A12L before going to A13.
[Lenovo P11] ZhenMing:
For Launcher, I had not tried, but the Lenovo Launcher is so integrated to the entire system, it might break some features.
[Lenovo P11] wike.aj:
Mine is mediatek version but has the same problem. Half screen is clean, the other is "dusty". I don't think it is a software problem, seems to be like that since the beginning. Only a on-off cycle (sometimes more than 2-3x) will fix the half screen problem
[Lenovo P11] ZhenMing:
The PC mode is having a workaround. Go and try it out.
[Lenovo P11] gcsuri:
Where can I order this tab from?
[Lenovo P11] ZhenMing:
I got it from local distributor, but side import from China.

The rest was from AliExpress... I believe...
[Lenovo P11] Marcip@n:
I purchased on Ali from MeMall Store.
[Lenovo P11] comienzo2093:
This model support netflix L1, but doesn't support netflix HDR. how can I fix it? firmware ver : 14.0.625, CN rom
[Lenovo P11] ataman76:
Hello,

Is there a way to root it? Have you found the original rom to download?
[Lenovo P11] Thomasfp:
Hello. Where can I find ZUI 14 for this tablet (TB-138FC) ?
[Lenovo P11] ZhenMing:
For my case, I got mine through OTA. But if you are out from Asia, you might consider to use VPN and update from there.

Some member reported it works that way.

However, what is the ROM you are with at the moment? If your BL is locked, the above VPN should work.
[Lenovo P11] ZhenMing:
I'm not sure how to do it, yet. Any other know how to do it?
[Lenovo P11] luisekr:
Cannot find any rom for this tablet.

I think we can get it from android 13 update that is scheduled to 2023 1Q.
[Lenovo P11] luisekr:
Can i get vbmeta.img file for 14.0.625 CN ROM?

Accidently flashed it with another vbmeta and my tablet has bricked T.T
[Lenovo P11] ataman76:
You write that the rom cannot be found, but you have flashed the tablet. What did you flash?
[Lenovo P11] luisekr:
GSI ROM that doesn't contain vendor img.

When i flash system.img only, it worked.
[Lenovo P11] ZhenMing:
Do you meant you had unlocked the BL and flash with GSI System.img, and it work? That is nice.. but will the Lenovo Pen work in there?

Someone asked about how to unlock this tablet. Could you share the steps or ref here?
[Lenovo P11] Thomasfp:
I found such a ROM, in the name it has 132FU, but below it is also listed 138FC, what do you think?

Search for TB138FC | Rom Developers

romdevelopers.com
[Lenovo P11] ZhenMing:
The file name address it is for 132FU. It is best not to try that.
[Lenovo P11] luisekr:
Actually my purpose was porting Android Automotive OS, so i don't have Lenovo Pen.

Lenovo pen will not work for GSI.

Except that, most of the feature worked for lineageos 20.0.

Tried crdroid, pixel experience also but they have launcher problem.

Unlocking bootloader was easy.

Just unlocked it with fastboot oem command.
[Lenovo P11] luisekr:
Also found this rom for 132FU. 132FU is pad with 1300t processor.

When i read vbmeta.img in that rom, found some string named 132FU. So it will not work but i'll try to flash, cause my tab has already bricked T.T
[Lenovo P11] luisekr:
Didn't work
[Lenovo P11] oleang:
Hello, how can I install apps on my SD card?
[Lenovo P11] justln:
New firmware update, just popped up randomly. Didn't have to use VPN to download or install. Google Translated notes.
[Lenovo P11] euphoriaaaa:
Got the same update notification too. Anyone updated already? Any feedback?
[Lenovo P11] ZhenMing:
TB138FC_CN_OPEN_USER_Q00024.0_S_ZUI_14.0.625_ST_220901_to_TB138FC_CN_OPEN_USER_Q00024.0_S_ZUI_14.0.820_ST_230117.zip

drive.google.com
[Lenovo P11] kazamama:
I have the 2021 version. Is the new update for the 2022 on Android 12L?
[Lenovo P11] ZhenMing:
It is still Android 12.
[Lenovo P11] ataman76:
Anybody know how to extract boot.img from this ROm with Payload Dumper Tool ? I tried but i can`t.
[Lenovo P11] Cosmitooo:
Which rom are you using?, I have version 14.0.691 ST installed, I have not received anything yet, I tried to connect with a vpn to Beijing but it did not update either
[Lenovo P11] ZhenMing:
You could download the update file above and follow the manual method to update yours.
[Lenovo P11] Mesba1247:
I need TB138FC ZUI Firmware
[Lenovo P11] ataman76:
Hi. how to enter fastboot mode because I have "waiting for any device" all the time
[Lenovo P11] ZhenMing:
I am very interested to convert it to run Win11. Anyone tried or having reference for possible method to do so?
[Lenovo P11] ZhenMing:
I think this is too dangerous to try... delete for protecting us...
[Lenovo P11] ataman76:
Is this forum dead?
[Lenovo P11] ZhenMing:
Nope. Just nothing new or discovery so far for our tablet... 🤣🤣😂😂
[Lenovo P11] itsLevis:
This now works with the latest update (14.0.820), it's a pain to change users but at least you can have multiple.
[Lenovo P11] ataman76:
Why are you so ****ing happy?
[Lenovo P11] ZhenMing:
It is your choice to be happy and enjoy with the tablet;):ROFLMAO::ROFLMAO:.

Or being sad and poking others with envy feeling.:cry::cry: