Error: Failed to download metadata for repo 'fedora-cisco-openh264': repomd.xml GPG signature verification error: Bad GPG signature
and ends with
Problem opening package kernel-core-6.0.8-200.fc36.x86_64.rpm
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Error: GPG check FAILED
I’ve upgraded to f35 only yesterday and I was willing to move straight to f36…
I don’t understand why this error now, I had nothing like that in yesterday’s upgrade, fwiw
If you did not do this step sudo dnf upgrade --refresh before starting the system-upgrade the documentation suggests that be done first to ensure everything is in sync before starting the system-upgrade.