Nope. Nobody has ever figured out much of anything with that game to be honest. I'd imagine if you're truly interested the first thing to do is put up some files at forum.xentax.com and zenhax.com to see if people can figure them out. If they have any success I would probably see if you can extract the PSP exclusive characters and put them on your platform of choice.
I wish I could help more, but nobody has ever even attempted it, so unfortunately you're on your own.