Guys, does the blank screen appears on your PSP after you turn it on and nothing happens no matter whatever you do to it then your PSP is Bricked. Don't worry at all because you will be able to play your favorite games again. First i want to tell you that there are two reasons by which your PSP can be bricked, one while installing the update the PSP is switched off and two when you try to downgrade the firmware version. Your PSP can be unbricked all you need to do is you need the PSP Pandora battery and the Magic memory stick combo.
I am gonna tell you more about advantages of Unbricked PSP & genuine online Pandora Battery & Magic memory stick dealer.
A "bricked PSP" does not have the correct files to boot up properly and wont do anything when you turn it on. The Pandora battery is also known as the "Jigkick" battery or " TOOL" battery, by using the Pandora Battery and Magic Memory Stick you can downgrade the firmware and play , unbrick (unlock) your PSP or install your own custom firmware. Also, you are open to play Homebrew games and application after unbricking your PSP. Apart from Homebrew games available for the PSP user who has gone through the PSP Downgrade process but there are also many "old school" games that you can play on you downgraded PSP, games like Donkey Kong, Mario Brothers and many more. The benefits of doing a PSP downgrade are numerous, the free games and applications, the DVD's that you can back up and watch on your PSP.
If you need psp pandora battery and memory magic stick you con click on the link given below:
Here is the Video on how to install custom firmware on your PSP(fat/slim)!