Yes there is...
Start up your psp with the charger connected WITHOUT the battery in.
When on XMB insert your battery.
go on USB mode
put this in your iso folder...
http://www.sendspace.com/file/65vyn1 Then run it on XMB and go into some menus and find an option like 'restore normal battery'.
(it will replace existing battery serial from pandoras serial)
then go to usb mode, format your memory stick. (you will no longer need the pandora stuff you already have)
^i cannot ba any more specific because i havent got a psp to try this. My psp is taken apart for case changing.
It is very simple. all you need is the cso file in the link above.
Do not be afraid of
ing your psp up.
Send me your feedback....
Hope this helps =D