The images where applied with Balena etcher.
Petitboot was removed as described.
The PSU was included in the bundle (15V 4A).
Odroid Ubuntu works fine.
The boot process stops at:
Booting kernel ...
I tried the following Images (none of them works):
Armbian Buster - mainline kernel 5.10.y
Armbian Focal - mainline kernel 5.10.y
What am i missing ?
Any help appreciated.