I would suggest you check this guide out:
2.00 / 2.01 (Easy) Downgrader Guide / InstructionsYou could downgrade your friend´s PSP to 1.50 with it. Once in 1.50 firmware use your friend´s PSP to convert a regular SONY battery and memory stick to a Pandora´s Set as described in this guide:
Classic Pandora's Battery Set - Tutorial / Guide [For Classic PSPs ONLY]Once with the pandora´s set, you can unbrick your PSP, which will install 1.50 firmware.
Then just use the latest CFW available to upgrade both consoles to 5.00 M33-4.
Honestly, it´s so easy that if you do not even try you would regret it.
Personally I would avoid buying anything you can get easier and faster for free. Besides we´re against people making profit for something like this, so nobody will give you any links or sites to buy Pandora from.... we believe it should be FREE
