Firmware

I've now firmware 5.51
How can I change it in a older firmware?

Exploits and downgraders.

Pandora battery, Magic memory stick dude. Unless you have a PSP3000 or a new PSP 2000

Ahhh the joys of pandora ^_^

I haven't charged my Pandora forever probably dead... well yea specify what PSP you have for further assistance.