Upgrade Fedora 42 to Fedora 43

• Update Fedora 42:

  sudo dnf upgrade --refresh

• Reboot.

• Install dnf-plugin-system-upgrade if not installed:

  sudo dnf install dnf-plugin-system-upgrade

• Download Fedora 43 packages:

  sudo dnf system-upgrade download --releasever=43

• Start upgrading. This will reboot machine:

  sudo dnf5 offline reboot

• Wait until upgrading finish.

References

https://docs.fedoraproject.org/en-US/quick-docs/dnf-system-upgrade/