Xiaomi Mi MIX 4 (odin) for eOS-U 2.6
e-2.6.3-u-20241218-UNOFFICIAL-odin.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/XiaomiSmartphones/e-2.6.3-u-20241218-UNOFFICIAL-odin.zip/download
Please see sources and install instructions including recovery here:
https://xdaforums.com/t/rom-15-0-unofficial-lineageos-22-0-for-xiaomi-mix-4.4394723/
Use it at your own risk!
Please support the developer(s)!