Hacking Trophies using hacked PS3 game?

[Sressiv]

So basicly I got Tales of Vesperia for PS3, which came out in Japan only. Now when I replace the string.svo with a translated file, and play the game on my modified PS3, will I be able to earn trophies and get them to my 'legit' PSN-account? I have another PS3 which is clean and I'm using that same PSN-account on that one as well. Is it possible to register the trophies I earn on that PSN-account, and not get banned?

I don't know if its possible to use a PSN account while having custom firmware of some sort. thanks in advance~