I'm pretty sure I'm skirting the line on what is and what is not acceptable conversation by talking about ROMs, but I'm making sure to stay behind the line by not giving out locations to download from.
Anyway, what is v1.1? Is it just a compatibility fix for emulators? Do most new versions of emulators not need this fix? Because my PAR and GG codes aren't working with it.

Maybe it is a ROM that is of a newer build, thus requiring an updated emulator. Not sure, I stick to SNES and GBA.

I'm not entirely sure, but I believe that when a ROM is released with version numbers (1.1, 1.2, etc.), it means that the developers has released an updated version of the game.

This is the SNES version

Version numbers in this format are official revisions made by the developer to correct bugs, exploits and other mistakes that were present in a previous manufacturing run. Many popular games had several revisions, each fixing a particular issue that was missed in the last run. Modern games have shifted towards receiving patches through the system's online service, with the discs themselves often remaining unchanged until the game is reprinted as part of a budget line ("Platinum Hits" or whatever).
Patch codes require the particular revision they were designed for, so pay attention to which version was specified.
ROMs that have been modified for emulators will indicate that they are "cracked" with a "[c]" mark or similar. Modern emulators no longer need a cracked version in order to emulate a game correctly.

Right, so does anyone know what was fixed in v1.1?

Games back then didn't have patch notes of any sort, so it really comes down to people who know the game really well analysing the versions and pointing out differences. I can't find anything like that for this game.
Generally speaking the highest revision of a game is the best one, but for some glitches and other tricks you need to use a version from before the developers patched it out. Something as simple as fixing a typo will still result in a new revision, so a higher version isn't always tangibly different from the one before it.

Yeah, that's why I posted the question. So such a person would find it and give an answer.