none of the images from https://www.armbian.com/odroid-c2/ seem to boot at all
(tested: Armbian 23.02 Bullseye CLI and Jammy Gnome desktop on two SBCs)
img burnt, power connected, blank screen, no blue LED "heartbeat" blinking.
previously Armbian_23.02.1 from ../rc/ booted ok
(just had that "no reboot" issue)