i used to be all up on my psp hacking and homebrew stuff but i sold my psp and have not messed with it since. i had hooked up a friends psp a long time ago and now he wants me to update his games and stuff. i has some old custom hacked firmware "3.71 M33-2". i want to put the newest custom firmware on it and all that good new stuff. do i have to downgrade back to 1.5 like in the old days or can i just upgrade straight to a newer custom firmware? its the original fat psp. i know im a pain but im completely lost if anyone can just let me know how to get the newest and best custom firmware on it ill figure out the rest....thank you!!!!