Hello. I have been wanting to install the newest cfw for psp. I have no idea what cfw firmware is the newest or the best. I have heard of 6.60 pro b9/c/a9...gen d firmware...etc. could some one explain how to do this? which cfw would you guys advise me to install and how? One last thing, i remember that I managed to go to gen d5 or something like that in the past, but all my save data was corrupt. That is why i was forced to stay on 5.00 m33. is there a way to fix this problem if i go to higher cfw?It is a very big concern to me. Thank you!