If you mean Armbian Rock-3A images unfortunately these does not boot up. I tried few, downloaded from this site or compiled ones. Only green led was on and nothing on hdmi or serial terminal (except few broken letters).
Hopefully Radxa latest images are working fine but you must avoid upgrading kernel and firmware. I tested these 2: rock-3c_debian_bullseye_cli.img.xz and rock-3c_debian_bullseye_kde.img.xz
I got email explaining why firmware breaks, etc...