Interesting, in " Introduction to ROCK 5 Debian", they still showed using āapt-getā command. Anyhow, it didnāt matter, I used āapt upgradeā, Rock5B still hung.
@Googulator, They literally do the same thing in terms of packages. Apt is just extension of apt-get, not a āwhole new logic for updating packagesā
In fact, as soon as I ran an apt update command (before upgrade), I noticed errors relating to the public key for the radxa repository.
Once I had downloaded and added the key, by running an update, I no longer received any errors or warnings, and then running apt upgrade everything went well.
When I restarted I had no more problems.