I'm in the middle of installing the custom rom but i'm stuck.
when I try to install the image lineage-17.1-20210408-UNOFFICIAL-TB8504.zip with twrp twrp-3.3.1-1-TB8504.img but when I hit the install it just keeps doing it forever without a response.
I've tried what CountDracula120 suggested. wiping the data and everithing and than wiping the system. but the process stucks at "formatting system using mke2fs..." what should I try? any suggestions?
and an other thing that i've fond, the only way it works is if you unselect read only, put back the check into the system box select it to be read only and uncheck it agan, than select system again. don't know why it is hapening but it's hapennig.
* I'm not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed (like it did for me...).
* 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.
* Same statement for XDA.
LineageOS is a free, community built, aftermarket firmware distribution of Android 9 (pie), 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.
WLAN and USB tethering Broken
You tell me
In TWRP clean Data if you coming from stock ROM and do Install of this ROM. If you have android 8 stock rom installed you have to format Data with data loss, because used encryption is incompatible with android 7.1
Built from omnirom android 9.0 source (twrp 3.3.1), includes same kernel as Lineage build, with support for pstore (kernel logs after crash), exfat, ntfs, reboot to EDL mode.
XDA:DevDB Information [ROM][UNOFFICIAL][10.0][tb8504f/x] LineageOS 17.1 for Lenovo TAB4 8, ROM for the Lenovo Thinkpad Tablet
Same here... I think it depends on the firmware because it works for some people. I think I had Bluetooth working in this ROM a few weeks ago, but then I reflashed Oreo firmware and it stopped working.