I'm on 3.71m33-4 still and was wondering what's the best version to use now and what are the advantages to using it? And whats the best way to update to the latest version? I have not touched my PSP in almost a year, but I would like to get back into it. And what version of the PSP is unhackable? I want to get a slimmer PSP as I have the Phat one right now.