@MMGen
Got Rock 5B working by following the guide (keyboard unlock only, without SSH - as desired). Thank you very much!
However, at least with the following images:
* Armbian_24.8.1_Rock-5b_bookworm_current_6.10.6_cinnamon-backported-mesa_desktop.img.xz
* Armbian_24.8.1_Rock-5b_jammy_current_6.10.6_kde-neon-kisak_desktop.img.xz
# cat /etc/resolv.conf > etc/resolv.conf
does absolutely nothing, have to create the file manually and set desired DNS server there.