Thank you @atomicdog and jcsiblesei for the help. Yes it is an uppercase oh (O). My other operating systems are working again, sadly my original Fedora 40 is not booting still. The drive is not corrupted and is readable so I can get all my data off of it.
The thing I don't understand is pnor was still showing version 2.3. The only clue it had downgraded was the linux version had reverted to 4.19. To upgrade the pnor you have to ssh in from another computer and enter passwords, it then deletes the existing and writes the new version. How did upgrading from Fedora 40 to 41 change my pnor?