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

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J

jan.lenovo

Member
Feb 7, 2023
7
0
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:
Code: 
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:
Code: 
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?
 
MAGOOSKEE

MAGOOSKEE

Senior Member
Jul 30, 2022
52
1
jan.lenovo said:
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:
Code: 
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:
Code: 
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?
Click to expand...
Click to collapse
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.
 
J

jan.lenovo

Member
Feb 7, 2023
7
0
MAGOOSKEE said:
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.
Click to expand...
Click to collapse
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://forum.xda-developers.com/t/...ports-for-lenovo-tab4-8.4485851/post-88146281).
 
ZONTAC

ZONTAC

Senior Member
Apr 18, 2021
97
11
Lenovo Thinkpad Tablet
Galaxy Y Duos
jan.lenovo said:
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:
Code: 
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:
Code: 
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?
Click to expand...
Click to collapse
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🙂
 
C

cybermaus

Senior Member
Dec 6, 2008
1,240
479
Earth
www.campingtiveden.se
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.
 
peter-k

peter-k

Senior Member
Jul 31, 2013
2,538
695
Singapore
cybermaus said:
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.
Click to expand...
Click to collapse
Just feedback, rotation works fine for me.
 
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  • 5
    adazem009
    adazem009
    zYkSW7S.png



    Code: 
    /*
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 flashing it!

YOU are choosing to make these modifications, and if you point the finger at me for messing up your device, I will laugh at you.

Your warranty will be void if you tamper with any part of your device / software.
*/


    LineageOS is a free, community built, aftermarket firmware distribution of Android 11 (R), which is designed to increase performance and reliability over stock Android for your device.


    LineageOS is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. LineageOS does still include various hardware-specific code, which is also slowly being open-sourced anyway.


    All the source code for LineageOS is available in the LineageOS Github repo. And if you would like to contribute to LineageOS, please visit out Gerrit Code Review.


    What's working :

    • Boot
    • RIL (Calls, SMS, Data)
    • Wi-Fi
    • Bluetooth
    • Camera
    • Camcorder
    • Video Playback
    • Audio
    • Sensors
    • LED
    • GPS/GNSS


    Instructions :
    • Download the ROM and Magisk (Optional)
    • Wipe System, Data, Dalvik, Cache.
    • Flash the ROM, Magisk (Optional).
    • Reboot and Enjoy.


    Download :
    Device sources: https://github.com/TB8504
    View
    4
    adazem009
    adazem009
    Update
    Download
    • December 2021 security patch
    • ... Merry Christmas :)
    View
    3
    adazem009
    adazem009
    Reserved.
    View
    2
    adazem009
    adazem009
    rohityadav07009 said:
    Bro I have installed this rom, thnks for ur work but it's lagging ... is it only happening with me or with everyone !! so i decided to give a try to ur crDroid rom , again u guys are doing gr8 work !!
    Click to expand...
    Click to collapse
    It's happening to all of us (see the "Known issues" section above). Updating some vendor blobs should fix it, but I think I'll need some help with it.
    View
    2
    adazem009
    adazem009
    Lê Hữu Huy said:
    Are you still developing this project? Can Tab4 8 update to Android 12? How can I donate to you to keep this project going? Thank you, hope to hear from you soon.
    Click to expand...
    Click to collapse
    Yes, I'm still working on it. I'm still waiting for Android 12 CAF releases targeting to msm8937. After they''re there, it should be possible to build it using the device trees from Android 11 (with a few changes).
    View

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