Ok jernej , so here is my feedback:
Booting works now with the nightly image (and my self-built one ![]()
I've got still problems with reboot. This seems to be board-version specific.
I own two different TX6:
According to https://linux-sunxi.org/Tanix_TX6#Identification it's the TX6-H 2nd version (with CS_H6_TX28_V2.7 20200616.L6 / RTL8822CS) - though it's just stickered with TX6 on the backside - which is the one, that doesn't reboot. I need to disconnect it from power and after a few attempts of reconnecting it suddenly boots again. It's not reproduceable how many reconnect tries are necessary...
The second one is a TX6-P (CS_H6_TX28_V2.5 20191209.L4 / XR819) with the TX6-P label on it. This one reboots just fine.
So, better than before, but still some reboot issue on the TX6-H (2nd version). Though this is surely no LE issue, but an upstream or hardware-specific one maybe this info could be helpful for you.