Two options for cisco.
- Disable the cisco repo in /etc/yum.repos.d/fedora-cisco-openh264.repo by changing to enabled=0 and then install rpmfusion and install libavcodec-freeworld How do I enable h265 HEVC playback in Fedora 41 or 42? (2025)
- change the mirror in /etc/yum.repos.d/fedora-cisco-openh264.repo to a hardlinked mirror such as Index of /openh264/42/x86_64
I have no idea about app centre - it is better do do everything by command line.