I had installed Fedora KDE for an older relative on his old Dell laptop. I had already upgraded it from 40 to 41 before, but this time it seemingly refuses to upgrade at all.
I tried upgrading through the "KDE Discover" program at first, no success. I would click the "Upgrade to Fedora 42" button and nothing would happen.
Then I tried upgrading manually using the instructions given by the fedora wiki, and I get the errors from the attached image. (Image below is the continued output)
On top of that, to make things worse, WiFi literally disappears at a whim sometimes. I mean all GUI options for WiFi disappear. I have to restart to make it work again. This is frustrating, can anyone give some insight? Should I just wipe and reinstall something else?
I'd remove rpmfusion and it's packages, upgrade, and reinstall them. No idea what's the particular issue with the 404, could be old mirrorlist, transient issues, but in general if you asked Fedora they'd tell you they only support upgrading with official repos on.
Which is fine really. You're not losing anything.