Steam deck not booting after update

So I’ve turned on my steamdeck again today. The updates weren’t working and I saw the announcement of the key rotation thing, so I applied the fix, then I could update, which took a while, and now the ostree:0 option in grub won’t boot. There’s a cursor in the top-left of the screen, then it disappears, and I’m left on a black screen with nothing. ostree:1 is working but I’m scared to do any updates or touch anything. Help! I don’t want to reinstall my OS again!

Oh hey I got an error message on this particular boot. Booting behavior seems inconsistent.
/init: error while loading shared libraries: libsystemd-core-255.10-1.fc40.so: cannot open shared object file: No such file or directory