FIRST, let’s address the elephant in the room for previous Fedora users:
“Why can’t I just use dnf update?”
Nobara’s Update application has been designed so that it not only updates packages on the system, but also checks for modifications or changes to the system’s repositories, as well as performs a ‘sync’ to installed applications. What this means is that it will check package versions installed on the system against package versions in the upstream repositories, and if they do not match versions, it will attempt to sync them to the correct version. This provides better update compatibility in the event that a custom package may have been installed or overridden system packages and/or otherwise caused conflicts. This also provides an auto-rollback mechanism in case a package update was pushed then removed or downgraded upstream. THEREFORE dnf update is simply -not enough- by itself, and it is instead recommended to use the Update System application provided by Nobara.
Now that that’s addressed, there are 4 different ways you can use to correctly update the system.
nobara-sync
in a terminal launches the Updater app in a GUI, while nobara-sync cli
launches it in CLI mode (command line interface). Even if you are stuck in a non graphical interface(TTY), the latter should make it possible for you to run updates.