Could anyone provide me with a guide to do this?
Thanks in advance
Or install a fresh template:
https://www.qubes-os.org/doc/templates/fedora/
I recently have done upgrading fedora-26 to 27 and it works like a charm. Just gonna upgrade it to 28 I suppose though I do still want to know a way to make the fedora-28 template I installed work as it's much faster to jump to 28 than having to go through 27 which takes almost a whole day.