I just got a PSP and the firmware is 2.71. Woulw I be able to downgrade it? I would like to be able to run homebrews on it AS WELL as play backups on it. From what I understand they best firmware to run backups and homebrews on is 1.5/1.6. Is there a way to do this? If not, what is the best way that I can go about running backups on it? Thanks in advance.