Updating fedora core 2
If you are sure you want to do it, upgrading to a Branched release or to Rawhide can be done with DNF system upgrade just like upgrading to a newer stable release.
There are just a couple of special notes that are covered in the instructions.
directly, without the DNF system upgrade plugin, is not explicitly tested by Fedora QA and issues with it are not considered blockers for a release, but in practice it works for many users.
Recommended Workstation Upgrade Method This is the recommended method for upgrades of Fedora Workstation 23 and later, but the DNF system upgrade method may help you identify dependency issues if the graphical method has problems. Fedora Workstation 23 and later include a graphical system upgrade mechanism.
When a newer stable release is available, you should see a graphical notification, similar to the ones you see for system updates.
This is not technically an 'upgrade' operation, it is simply an update, but there are some special considerations involved in making sure you stay on the update track you intend to use, which are documented on this page.
Rawhide and Branched are the development releases of Fedora.