There is build designed just for OMV7 for ROCK 5B boards by @wong_disable
more on this thread: [Image] - OMV7 for Rock 5B with ZFS v0.2
5B+ is not much different board than 5B, only few small differences so You can boot with any of them, no worries.
To remove GUI on radxa image simply go to rsetup and select boot target from gui, restart.
then just purge gui packages, this should work with something like this:
sudo apt purge --auto-remove libx11-6 libwayland-client0
I don’t have any board at hand now, so package name may be different but it’s quite easy to check, pick any package and check deps, something like firefox.