Lenovo TAB4 8 (TB8504) for /e/OS-S 2.4
e-2.4-s-20241005-UNOFFICIAL-TB8504.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/OtherSmartphones/e-2.4-s-20241005-UNOFFICIAL-TB8504.zip/download
Please see sources and install instructions including recovery here:
https://xdaforums.com/t/rom-unofficial-12-tb8504f-x-lineageos-19-1-for-lenovo-tab4-8.4687235/
Use it at your own risk!
Please support the developer(s)!