@metrobokke
I managed to install UT on TB-X606F, it's working great.
This rom was used to downgrade to Android 9 :
https://firmwarefile.com/lenovo-tab-m10-fhd-plus-tb-x606f
Downgrade was done with SP Flash Tool on Ubuntu 20.04. It didn't work on Win 11. Be sure to select de Download Agent from the image.

I hope the port will be official soon.