It's 4.01 according to some .inis, straight off the disc. I'm not aware of any patches, if that's what you mean.
Thanks for pointing me to that script - it apparently extract 69% of the files, but there's still a lot of 1 kb files I dunno what to do with. Audacity can import the raw data from the .ani files but there's a ton of static. Still, it's a great start, and way more success than what I managed on my own.
Additionally, I edited the script and removed the "math OFFSET + 0x10" as mentioned here
and that apparently extracted...almost everything? 99%, but...not seeing much difference, honestly. The files are mostly .nfc, .dat, .sdb, and .pal if that helps any. Still mostly 1 kb.