it showed up here. dunno what to suggest.
maybe install 5.11 on a VM somewhere with the same package set and architecture (on the blown system, /var/log/rpmpkgs, then copy everything in /bin ? boot the target system with a rescue OS, mount your OS root as /mnt or something, and copy that backup to /mnt/bin ?
this won’t be perfect unless you know exactly what RPMs were installed on the blown system, but its probably better than nothing.
I dunno. I think I’d install a new box with 6 or 7, and migrate over whatever app stuff you need.