1. Backup System and Upgrade

rsync -avzh localdir/ user@10.1.2.3:/path/to/remotedir/
sudo dnf upgrade --refresh

2. Install the DNF Plugin

sudo dnf install dnf-plugin-system-upgrade

You can optionally add –allowerasing flag to remove troublesome packages.

3. Start the Update With DNF

sudo dnf system-upgrade download --releasever=<Version#>

4. Reboot and Upgrade

sudo dnf system-upgrade reboot