Hi guys its been a while since I was last on the forums, I've been running CFW on my PSP for sometime and have a fair idea on how it all works, unfortunately I'm very new to the PS3 which I just got today.... and I don't want to go and do something I don't know and brick it or go and do some stupid upgrade and then not being able to downgrade it for a long time and be stuck on OFW! so yeah I'm running 3.72 as I said and I'd like to know what options I have... is CFW 4.00 legit? whats the difference between jailbreaking and running CFW? what should I do? Thanks J.