I have a psp 3000 with firmware 4.01 I also have a pandora's battery Is it possible to downgrade this psp with the pandora's battery? If it isn't what can downgrade this psp? Any help would be appreciated. Thanks in advance.
pandora's battery is blocked on 3000 series. you need to use chickHEN. and there is no permanent custom firmware for the 3000 series.