Can you tell this village idiot how you accomplished that? I think previous Clover versions might be in the EFI-BACKUPS folder, but I'm not sure how to restore my old config.
EDIT: Here's where I am so far: I mounted the primary EFI partition using the installer's terminal: mount -t msdos /dev/disk0s1 /Volumes/EFI. I found the config.plist and copied it to the USB drive. Moved that to a friend's MBP and edited it. Pasted the whole quirks section to the end of config.plist. Restarted the installer and copied the edited config to the EFI/CLOVER folder. The system starts up now, but the USB keyboard isn't detected so it sits there on the login screen telling me to connect a keyboard. The keyboard works fine in UEFI or the installer, so I know it's not unplugged when I start the main OS. Must be a quirk I need to fool with. Any suggestions?
Now that I can somewhat reliably copy files to the installer, I'd rather revert the Clover version to 5122 and hopefully be able to boot normally. How should I go about this? Is it as easy as obtaining the 5122 release and copying the contents of the CLOVER directory over the existing one?
Second EDIT: While attempting to correct my issue, I accidentally destroyed my EFI folder. See here for details and how I reverted to r5122:
https://www.tonymacx86.com/threads/recover-overwritten-efi-folder.304713/