Directions I had said update to A25, so not a big deal to do on my dual-boot. I have not tried it on any other firmware myself.
I also had recent experience where power was off for a bit, and the bios battery needed replacing, all bios edits needed to be done again, but just a 5 minute fix to do them again.
Probably the best desktop hack I have had in 15 years or so of doing these. Just about trouble free.
Edit: Now Updated to 11.4, and Opencore 0.6.8.