I can not upgrade OMV5 to OMV6 on Odroid HC2.
After run omv-release-upgrade I got this:
The repository 'http://apt.armbian.com buster Release' no lo
nger has a Release file.
N: Updating from such a repository can't be done securely, and
is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user c
onfiguration details.