Things You'll Need
Instructions
Turn off the PSP and remove the battery and memory stick.
Insert your Pandora Magic Memory Stick into your PSP followed by the Pandora battery. The PSP will turn on and you will be presented with the Pandora menu.
Select "NAND Operations" from the main menu. Select "ID Storage Tools" and select your region. Select "Get Real Mac" and the PSP's IDstorage will be reinstalled.
Select "Restore NAND" and your PSP NAND will be restored. Select "Reboot Device."