I burned the image with Balena Etcher and verified it.
After the first attempt it did not boot. Downloaded and burned the image a second time on a different SD card, again not booting. The green light on the board stays on.
I'm a fan of Armbian. Never had issues on my RPI5. I hoped this new powerfull SBC would be the same but no, Armbian is not working and the RADXA OS also is giving me lots of problems.
Sorry to say, I'm a little dissapointed...
Ernst-Jan