Fedora has about (or at least) four ways to install updates.
-
There are different package managers:
dnfandPackageKit.-
dnfis a command line tool (sudo dnf update), and - Gnome Software uses PackageKit.
-
-
Then, there is online updates and offline updates. Online updates install while your system is up and running (on-the-fly). For offline updates the system is booted into a special system update mode, see link. Both dnf and PackageKit can perform offline updates.
For dnf, there is a GUI in Fedora repos called dnfdragora (sudo dnf install dnfdragora). You can also use dnf to install your updates offline, see link2
Here is another topic that may interest you: