yashsingh1/xdaforums huggingface dataset:
[Thinkpad Tablet Android Development] onikwuthkro:
Anyone got a working recovery for the TB-8504X? Using the TWRP from this post, or PTRB from this forum does not work because:

1. It gets stuck in "Formatting System using mke2fs" when trying to factory reset/wipe device

2. Flashing via TWRP recovery or adb sideload always get stuck.

Anyone with the device able to tell me what's wrong? Decryption succeeded and I could flash and boot TWRP with no issue.

Edit: Sorted this out after a day, it turns out I was dumb and using

fastboot boot <recovery>.img

will not work, I need to flash the recovery.
[Thinkpad Tablet Android Development] adazem009:
Update

Download

August 2022 security patch.
[Thinkpad Tablet Android Development] adazem009:
Update

Download

September 2022 security patch.

Reverted unneeded CAF merge in kernel.

Merged wlan driver with LA.UM.7.6.2.c25 (should fix random kernel panics and freezes).
[Thinkpad Tablet Android Development] adazem009:
Update

Download

October 2022 security patch.
[Thinkpad Tablet Android Development] Nick Chan_:
I am experiencing random blackscreens still, so I guess the "random freezes and panics" bug aren't fully fixed

that being said there is no animation lag anymore (aside from the inherent performance limits of the device)
[Thinkpad Tablet Android Development] ZONTAC:
Hmm facing similar issue random shutdown ,sometimes freezes when trying to unlock screen and facing display blackout(looks like ui crashes).

Edit : facing all of these issues from september build
[Thinkpad Tablet Android Development] ZONTAC:
Can i dirty flash previous build???
[Thinkpad Tablet Android Development] adazem009:
Do you mean flashing previous build after flashing new one or dirty flashing new build?

Edit: Nevermind, I didn't read the messages above.
[Thinkpad Tablet Android Development] adazem009:
It seems that it only happens when some specific GApps packages are installed. Maybe using another package will fix it.
[Thinkpad Tablet Android Development] Hausemaster:
So far I've tested only litegapps and nikgapps and crashes occur with them...

I'll try open,flame and bitgapps
[Thinkpad Tablet Android Development] Nick Chan_:
I am using open gapps, so that crashes too.
[Thinkpad Tablet Android Development] ZONTAC:
Tried almost all gapps except flame gapps ,now i once again moved to crdroid 6.25(most stable , using bitgapps)
[Thinkpad Tablet Android Development] ZONTAC:
Also dev crdroid have almost same issue as lineage have.
[Thinkpad Tablet Android Development] powermaker450:
I do not have any GApps installed, only using microg and I still receive occasional random events where the device freezes, then the screen turns black and worn respond until a hard reboot is performed. Any idea why this could occur?
[Thinkpad Tablet Android Development] adazem009:
It occurs because there are kernel panics. For some reason I'm unable to reproduce it on my device. If you want to get logs after the crash, reboot after the screen turns black, but boot directly into TWRP. Then read /sys/fs/pstore/console-ramoops
[Thinkpad Tablet Android Development] powermaker450:
As I suspected. I will take a look at logs when I return home and reproduce the kernel panic. It seems to happen when there is load on the system
[Thinkpad Tablet Android Development] powermaker450:
I wasn't able to reproduce the panic, but I am sure it will eventually happen through normal usage. I will try to catch it when it happens and post the log here. My device is TB-8504F
[Thinkpad Tablet Android Development] powermaker450:
I was able to get the kernel log after the system locked up. Here is what it contained:

dmesg.log - Pastebin.com

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

pastebin.com
[Thinkpad Tablet Android Development] adazem009:
It seems that this is a log from TWRP instead of LineageOS. Did you reboot to TWRP immediately after it crashed?
[Thinkpad Tablet Android Development] powermaker450:
I did, but unfortunately I was unable to find/copy anything from /sys/fs/pstore/console/-ramoops in TWRP using adb pull or TWRP itself. I don't know if those logs could be somewhere else, but what I do know is how to reproduce the issue. You have to first set the performance profile to "Efficiency" in settings, then put the system on a load, preferably a game.
[Thinkpad Tablet Android Development] adazem009:
Ok, thank you. I'll try to reproduce it on my device.
[Thinkpad Tablet Android Development] RicardosCameraman:
Spoiler content hidden.

Edit: Wrong rom, I flashed crDroid 7.23. This is a known problem on the crDroid one.
[Thinkpad Tablet Android Development] adazem009:
Update

Download

November 2022 security patch.
[Thinkpad Tablet Android Development] FutureLizard205:
Hi! I've got a TB-8504F and I'm experiencing the same problem as @powermaker450 ("the device freezes, then the screen turns black and won't respond until a hard reboot is performed" = Kernel panic). No GApps or MicroG installed. I've attached the console-ramoops file I managed to get.

Edit: I added the .txt at the end of the file name in order to be able to attach it.
[Thinkpad Tablet Android Development] yammi79:
Hi. Having the same issue @FutureLizard205 and @powermaker450 report. It happens as soon as the screen turns off automatically after a few seconds. This is a freshly installed version with Nov 22 security patch and NikApps Core. Reinstalled to test and it happens again. What I did consciously after reflashing: set up my Google Account, installed my beloved Firefox and set the screen display brightness to auto.

Edit: also happens when using the device with screen on. It's crashes pretty regularly, also without Gapps as well as on CrDroid.
[Thinkpad Tablet Android Development] marcinmaxi:
Czyszczenie pamięci RAM (czyszczenie pamięci RAM)

RAM Calc - Apps on Google Play

Unique RAM memory app.

play.google.com
[Thinkpad Tablet Android Development] adazem009:
Update

Download

December 2022 security patch.
[Thinkpad Tablet Android Development] TheTalkingGrasshopper:
Hello, i'm trying to install this rom from stock but it's bootlooping, what should i do?

(I'm using tb8504f and needed to modify the updater script file because it was being detected as . maybe it's the twrp i'm using?)

​
[Thinkpad Tablet Android Development] adazem009:
Did you upgrade to Android 8.1 before flashing the ROM? Did you format data and cache after flashing it?
[Thinkpad Tablet Android Development] TheTalkingGrasshopper:
Yes, the stock rom was the most recent... And i followed the instructions ;)
[Thinkpad Tablet Android Development] yammi79:
Any idea what I can try to fix this? It seems this is affecting more users. Any luck yet @FutureLizard205 @powermaker450 ?
[Thinkpad Tablet Android Development] FutureLizard205:
Not yet.. I'm using an Android 10 ROM at the moment and no problems there.

Edit: You could try this: https://xdaforums.com/t/rom-unoffic...d-7-x-for-lenovo-tab4-8.4473173/post-87539325
[Thinkpad Tablet Android Development] giorgakis1966:
Hello. After much effort I successfully passed lineage-16.0-20200319-UNOFFICIAL-TB8504. I want to ask if this

LineageOS 18.1 is better, more stable without problems to pass it. Or to stay in?
[Thinkpad Tablet Android Development] RicardosCameraman:
Nah, there are random freezes even without gapps or magisk. But lineageos 17.1 is pretty stable IMO.
[Thinkpad Tablet Android Development] ZONTAC:
Download your preferred gapps ( i preferred bitgapps bcoz occupy less space and it is magisk flashable)

Bitgapps : https://bitgapps.github.io/download.html

Opengapps : https://opengapps.org/

Flame gapps : https://flamegapps.github.io/download#downloads

Light gapps : https://sourceforge.net/projects/litegapps/

Nik gapps : https://nikgapps.com/downloads#downloads
[Thinkpad Tablet Android Development] adazem009:
Update:

Download

January 2023 security patch.
[Thinkpad Tablet Android Development] jan.lenovo:
Hi guys,

please help me with flashing TB8504X.

I wanted restore tablet by Lenovo Rescue and Smart Assistant, but even if process was done successfully, after reboot tablet was still rebooting on Lenovo boot logo (no OS is loaded).

So I decided try to flash by alternate OS, but I am unable to finish it successfully.

I tried several ROMs of lineage (16, 17.1, 18.1) and crDroid from adazem009, but still although flashing is done and tablet is rebooted - android system hangs on system boot animation (logo of Lineage or crDroid).

I was only successfull with Ubuntu Touch from adazem009 but there is problem that WiFi not works (wlan interface is not created in system). Back to droid's OS.

Hardware is working but maybe I still miss something and cannot load OS.

Steps I done:

1) installed TWRP 3.3.1 via fastboot

(tried PBRP as well, with same result)

2) wiped data, cache, dalvik and system partitions

3) rebooted back to TWRP

4) pushed up OS zip file via adb

5) reboot device

Result = OS probably is booting, I can see animation boot logo of Lineage (or crDroid) but it is all. Can't get welcome screen (or what should be there).

Result is same with every *droid OS.

Thanks a lot!
[Thinkpad Tablet Android Development] adazem009:
Did you have Android 8.1 installed before?
[Thinkpad Tablet Android Development] jan.lenovo:
Hi Adazem,

unfortunately I don't know which Android was installed before. I suppose not as it was delivered with Android 7.

As first alternate ROM I tried LineageOS 16.
[Thinkpad Tablet Android Development] adazem009:
You need to install Android 8.1 stock ROM first.
[Thinkpad Tablet Android Development] jan.lenovo:
I tried to install latest stock ROM with QFIL but without success, it is probably Windows only app.

Is there way how to install stock ROM from Linux?

Do you have recommended stock ROM?

Thank you
[Thinkpad Tablet Android Development] adazem009:
You can use qdl:

GitHub - linux-msm/qdl

Contribute to linux-msm/qdl development by creating an account on GitHub.

github.com
[Thinkpad Tablet Android Development] jan.lenovo:
Hi,

after 2 days of searching, downloading and trying flashing stock images I finally successfully flashed stock image "Lenovo_Tab_4_8_TB-8504X_USR_S0011031_19124041525_Q12000_ROW_QPST" by QFIL.

After reboot tablet was in same state like after Lenovo Rescue and Smart assistant - still rebooting during boot (or before boot after Lenovo logo).

After this I installed TWRP again via fastboot, wiped data, cache, dalvik and installed LineageOS 18 ROM as well.

Result is again same. Tablet is booting with LineageOS boot logo animation and it is all. :(

Here is code from flashing:

Updating partition details...
Failed to mount '/persist' (Invalid argument)
...done
Full SELinux support is present.
MTP Enabled
Installing zip file '/sdcard/lineage-18.1-20230129-UNOFFICIAL-TB8504.zip'
Checking for Digest file...
Target: Lenovo/TB-8504X/TB-8504X:8.1.0/OPM1.171019.019/8504X_S001031_191204_ROW:user/release-keys
Patching system image unconditionally...

Here is code after flashing:

Updating partition details...
Failed to mount '/persist' (Invalid argument)
...done
Full SELinux support is present.
MTP Enabled
Installing zip file '/sdcard/lineage-18.1-20230129-UNOFFICIAL-TB8504.zip'
Checking for Digest file...
Target: Lenovo/TB-8504X/TB-8504X:8.1.0/OPM1.171019.019/8504X_S001031_191204_ROW:user/release-keys
Patching system image unconditionally...
script succeeded: result was [1.000000]
Updating partition details...
Failed to mount '/persist' (Invalid argument)
...done

I really don't know what I can do with it :(

Can please you or anyone help me?
[Thinkpad Tablet Android Development] MAGOOSKEE:
I'm no professional, but try flashing the persist image from the stock rom to the tablet using fastboot, then flash twrp to recovery as well. See if it fixes it.
[Thinkpad Tablet Android Development] jan.lenovo:
Hi Magooskee,

this not solved boot issue with android-like systems. :(

But disappeared red alert about "Failed to mount /persist".

And thank you for it because it solved issue with WiFi in Ubuntu Touch (https://xdaforums.com/t/rom-tb-8504...ports-for-lenovo-tab4-8.4485851/post-88146281).
[Thinkpad Tablet Android Development] ZONTAC:
Try to flash stock rom using qfil with repartition , because in my case it fixed recovery and persist(wifi etc) issues , be careful any mistake turn your tablet into trash🙂
[Thinkpad Tablet Android Development] peter-k:
My banking app says it will close because my device is rooted - huuu? I never rooted this ROM ....
[Thinkpad Tablet Android Development] cybermaus:
Just installed this on TB-8504X (model with LTE) together with FlameGapps

All seems to work, except the screen rotation sensor.

Using manual forced rotation (using 3rd party app) works fine. But Auto-rotate, though enabled, just does not pick up the orientation. I suspect it is the sensor.
[Thinkpad Tablet Android Development] peter-k:
Just feedback, rotation works fine for me.
[Thinkpad Tablet Android Development] adazem009:
Update:

Download

February 2023 security patch.
[Thinkpad Tablet Android Development] jvstvlad:
@adazem009

Which rom from yours is most stable/with best battery life?

Android version is not matter.

Currently using stock nougat.
[Thinkpad Tablet Android Development] adazem009:
I think that crDroid (Android 10) is the most stable.
[Thinkpad Tablet Android Development] LenovoTab8User:
Is there any way to get Dolby sound to work again on TB 8504F/X after installing this? the default sound is way too quiet

it will also randomly freeze and then screen goes black at times when trying to do anything fast, like rotate and then open youtube straight away. only way to fix it hard restart. anyone else getting this?
[Thinkpad Tablet Android Development] RicardosCameraman:
1.If you want something like Dolby sound then I'd recommend Viper4Android repackaged. (Use Magisk 25.2 to install it cuz it's installation is broken on Magisk 26 for some reason.)

2. Yes, most if not all of us are getting these kernel panics. Use Lineageos 17.1 or crDroid 6 if you don't want these kernel panics.
[Thinkpad Tablet Android Development] D3urman:
I'm new here and recently installed this custom Lineage OS ROM on my Lenovo TB-8504F tablet. It's been working fine overall, but I'm having trouble with Bluetooth. Whenever I try to turn it on, it hangs on "Turning on Bluetooth..." and sometimes even crashes when I attempt to turn it off and on again. Has anyone else encountered this issue or knows of a fix? Any help would be appreciated.

Thanks!
[Thinkpad Tablet Android Development] ktkjr:
I've been searching for the reason I can't get rendering to work correctly for me. I can get glmark2 and llvmpipe to work, but glmark2 and virgl or virgl-zink both error out. Is this the rendering issue mentioned in this post (from Nov. 2021)?

[ROM][UNOFFICIAL][11][tb8504f/x] LineageOS 18.1 for Lenovo TAB4 8

/* I'm not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed. Please do some research if you have any concerns about features included in the products you find here before...

xdaforums.com

Thanks for your work on keeping my tab functional.
[Thinkpad Tablet Android Development] scottyrick2:
I just installed the latest Lineage 18.1 and it works very well. Very fast and no warnings! Thank you. My tablet has new life.
[Thinkpad Tablet Android Development] wrickster:
Is it still working fine does it have any random screen freezes or black screen.I am using latest cr droid but it is having these issues.Could u plz suggest me stable rom.
[Thinkpad Tablet Android Development] scottyrick2:
So, this rom works great. Here is how you get to to be that way. First, you install it, boot up, and restore your apps, and settings. Second, you plug it in and leave it for about two days to settle down. No touch during this period. After that, the rom is quite stable. Sometimes, the screen will freeze or go black, but that is very rare after about a month of use.

Hope this insight helps. I am vey comfortable with it, and and willing to be a bit gentle while using it.

By the way, I first started with cr droid, and this rom is much more stable than that one.
[Thinkpad Tablet Android Development] wrickster:
Can i use magisk with it btw i first rooted it on stock but removed the root then the playstore shows device not certified and some apps don't open saying device rooted.Plz help
[Thinkpad Tablet Android Development] scottyrick2:
Play store is now a big problem for rooting. I do not root anymore for that reason, in addition to the fact that other apps, including banking apps, are getting better at circumventing SafetyNet type Magisk modules.
[Thinkpad Tablet Android Development] wrickster:
Thanks for your reply anyways i rooted added gms to deny list and installed safety net fix now the apps are working.
[Thinkpad Tablet Android Development] adazem009:
Hey everyone, I had a break for more than year but I'm going to continue with the development for this device. I've already managed to run Android 12 :)

And I'll try to continue with Android 13 and maybe 14 if possible.
[Thinkpad Tablet Android Development] scottyrick2:
Wow. That is very good news. I replaced the battery and this tablet runs like new again. I use it daily. Moving up from Android 11 to 13 or 14 would be amazing. I will follow closely your new work on this great device. Thank you!
[Thinkpad Tablet Android Development] adazem009:
Actually, I'll release LineageOS 19.1 (Android 12) builds first, I don't think it's a good idea to skip Android versions.
[Xiaomi Poco X3 Pro] masterross:
Guys,

Why decimal percentage disappeared when charging?
[Xiaomi Poco X3 Pro] EN_Gaming:
Might be a bug on the latest version, but the charging still as fast as before. No need to worry.
[Android Q&A, Help & Troubleshooting] Giga guy:
Hi, So I have a Samsung Galaxy Tab E 9.6 3g which I was trying to root using odin. the battery was over 60% and all the connection were ok.

(btw I was following this guide "https://www.hardreset.info/devices/samsung/samsung-t561-galaxy-tab-e-96-3g/faq/root/")

then after selecting the auto-root file i clicked start and for the first few seconds it was 1/3 done on the recovery section but then it suddenly said "FAIL!" i restarted the device because it was frozen and now i have this screen

"Firmware Upgrade Encountered an issue. Please select recovery mode in kies & try again"

I first tried odin but the thing wouldn't go into odin mode

(the tab wouldn't turn off and whenever i rebooted it it would show the same message again)

I tried some other third-party software but they also required odin mode which didn't work

then I tried kies it kept on saying "connecting" and after a while it said "Device not responding" i tried everything in the book but nothing seems to be working please help
[Redmi Note 10] onlinerfan:
Does anyone care about the presence of Trojans, viruses, sniffers and malware in custom firmwares?
[Redmi Note 10] StaryMuz:
Depends on what kind of danger you're thinking about.

If you feel threatened in the sense of being tracked and having your personal information collected by "Big Brother", then you are primarily threatened by the factory software.

If you feel threatened by misuse of your accounts or misappropriation of funds, you may be more concerned about this with custom ROMs.

Declaring a ROM "OFFICIAL" does not guarantee anything. It's a community ROM and nobody watches the code in detail. Most custom ROMs are open development projects.

In that respect, I see perhaps only Lineage OS as closed. So I would look at it as a factory ROM. If it is OFFICIAL from the creators website.

To keep everything safe, don't use your phone to make payments, to access your bank account and for your accounts with the most sensitive data.

All this is not to say that every ROM is actually dangerous.

I'm just saying it's not really safe either.
[Redmi Note 10] blackhawk:
Always monitor your assets to detect account breaches fast. Have a backup plan in place and act asap if breached.

Stock firmware is released on a large number of devices so it has a lot of eyes scrutinizing it.

Look what Apple is proposing to do.

No warrant searches of all their devices.

Apple Will Scan iPhones for Illegal Child Abuse Images, Sparking Privacy Debate

m.theepochtimes.com
[Redmi Note 8 Pro Questions & Answers] archer2009:
Just to warn everyone to NOT update your phone to MIUI Global 12.5.2 Stable .. after I updated my phone ran so hot I couldn't even hold it in my hands

Had to power the phone off, put it under a high speed desktop fan and quickly copy all my photos off the device and then Factory Reset the phone.

However even after a Factory Reset it drains the battery so much faster then before

Also I use my phone as the satNav for my car using Google Maps and now even with a 5 volt, 2 Amp car charger all it can do is maintain whatever charge level it has - so if it's at 80% charge and using google Map it will sit at 80% whilst being charged. If there is no car charger plugged in it will drain really fast.

I've disabled as many things as possible from running in the background and use anti-bloatware software to remove as much of the junk that comes preinstalled on MIUI as possible but it still drains fast.

This update is a total nightmare and should not have ever been released. And I've not even noticed a single improvement to the phone

Also I posted this exact post on the Xiaomi Reddit group and instantly this post was disallowed, so there might be many more people trying to warn others but having their posts blocked.
[Redmi Note 8 Pro Questions & Answers] Compass Linux:
https://xdaforums.com/t/rom-11-begonia-pixel-experience-official-aosp.4196041/post-85380955

https://xdaforums.com/t/rom-11-begonia-pixel-experience-official-aosp.4196041/post-85408335

My phone didn't boil like yours but it was draining battery more than usual.

A quick solution for you is to downgrade to MIUI 12.0.8.0 (latest Global 12.0.x ROM last I've checked). It's better to clean flash to avoid issues so make backups.

Compass.
[Tilt, TyTN II, MDA Vario III Themes and Apps] 401:
This is my first time posting so go easy.

Since getting the Kaiser I have really wanted to be able to stream videos from Youku or Tudou since it has pretty much everything. The TCPMP video loader doesn't seem to be working anymore and the only way I have been able to achieve this is by searching the site for the video I want, copying the link into www.clipnabber.com and then copying the download links into TCPMP. Does anyone know of an easier way, or perhaps is anyone willing to write a program similar to youtubeplay to allow us to do this. Any advice would be much appreciated.

Cheers
[Tilt, TyTN II, MDA Vario III Themes and Apps] meckah:
Just wait for the new Opera mobile to come out which supports flash?

Then you can go directly to youku or tudou websites and play whatever you want.
[Tilt, TyTN II, MDA Vario III Themes and Apps] ekw:
have you tried skyfire?

its not like tcpmp (instead it plays within the browser) but it has a nice zoom feature that basically makes it full screen.
[Tilt, TyTN II, MDA Vario III Themes and Apps] 401:
Actually my version of Opera plays video from youku in the browser. It only started about a week ago, problem is it's slower than a three legged dog. And as for Skyfire, not in the US so thats not an option. I just thought somebody might be willing to write a program considering how many TV shows and stuff are available on youku. By the way is TCPMP with videoloader working for anyone?
[General Questions and Answers] romit kaushik:
Hi

Its been 1 year i am using ownice k6 but i am not able to use lte service.

I put the sim in the slot but no network it only shows emergency call only.

Kindly help me with this.
[General Questions and Answers] Deleted member 1890170:
Look inside here:

How to fix a cell phone that says Emergency Calls Only - Smart Mobile Phone Solutions

Has your Android cell phone started displaying Emergency Calls Only? Does your phone no longer have service? Can you no longer make or receive calls or

smartmobilephonesolutions.com
[General Questions and Answers] romit kaushik:
It's not cellphone, it's car Android system.