change the Pandora battery and the magic memory stick back to normal.duh.
It's not the firmware that matters, it's the motherboard. A hackable motherboard can have custom firmware installed no matter what version of the official firmware it uses. 'Unhackable' (at present) ones can't have custom firmware installed at all right now. All phat PSPs can be hacked, most slims can, but recent ones can't, and at present, PSP-3000's can't at all.
If you have the latest firmware, you can download games from the Playstation Network.
You need yo make a Pandora's Battery and Magic Memory Stick. But you will also need to have (or borrow from a friend) a psp with custom firmware. Heres a link on how to make both. http://wiki.answers.com/Q/How_do_you_make_a_pandora's_battery
No, "fat" PSPs can also get the 3.90 firmware although you can NOT use the skype update.
Once you have the Pandora Battery installed, downgrade your PSPs firmware to the version of your choice, then you're ready to go! Enjoy your PSP!
PSPS Pekanbaru was created in 1955.
no they dont fix psps but you can always get a new one
yes they do
Slim
YES
Yes, they can.
it think its 500