Need help converting Monster Hunter Freedom 1 save to another region

[LunaMoo]

Patching is a bit generic word, so let's treat different cases separately:
a) game updates,
b) fan translations/mods,
c) cfw compatibility patches.


Starting from "a" - those usually require same patch version, sometimes showing a separate "multiplayer" version like for example Toukiden Kiwami(which had quite a few important updates with lots of content;p) which different patches could have same multiplayer version and as long as that number matches the games were compatible.

As for "b" - usually those will not affect anything important, unless it's some early bad/untested work, don't really recall any existing fan translation breaking multiplayer through.
I can say for sure MHp3rd last "maverick" fan translation was definitely fine, especially HD version as the standard one requires decrypting some files one by one which is annoying process that requires real psp.

"c" is still technically "b" ~ fan made modification, except it messes up with important functions and that's the whole reason it causes problems.

Best way to ensure getting clean copy of a psp game imo is to get it on ps store;p, digital download has 0 collectors value, so price is also fair in opposite to some rarer umd's.