hi, its been a while since ive been on here but im back. ive got my 3.03 oe-c psp and i wanted to try out 3.90 m33 or 3.80 m33 which ever is better,so this is what i wanted to know, if i dont like it what all do i need to revert to 3.03 oe-c, what do i need to convert my theme, font, custom icons, and background to 3.90 or 3.80. and is there any other thing i need to do. also what all do i need to do to upgrade just DL the 3.90 m33 firmware and install? or is there a special step or 2?