How to disable auto-update in Fedora

To disable the automatic updates at restart run the following command:

gsettings set org.gnome.software download-updates false

You can still update manually using dnf. This previous command disables the option. This is important, especially if you have enabled/configured custom kernels, or third party modules (e.g., NVIDIA Drivers).

Disable Kernel Updates

If you have installed a custom kernel or installed a third party kernel module, you can disable updates for the kernel.

To do so, edit the file /etc/dnf/dnf.conf within the [main] section, and add the following line:

exclude=kernel*