Question about Sony PlayStation Portable (PSP) Console

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Downgrading my psp 5.51 to 3.70 m33

Hi, i need help regarding my psp, I recently updated the firmware to version 5.51 and now I can no longer play .iso and .cso games. I was using 3.51 m33 before, How can I restore my psp to its former state without using pandora's battery and magic stick coz I don't have ny spare battery and memory stick pro duo. please help me, my e_mail adress is rcespiritu@yahoo.com, Thanks in advance.
Ryan

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Sorry Ryan, you will need a service or pandora battery to reload custom firmware.

This will let you back up games you already own and run them from the memory stick.

You can create a pandora battery and the 'magic' memory stick from any psp already running custom firmware. You can also buy them online, and if you look in the local classified ads website where you live, you can probably find people offering that downgrading service.

I cannot run through the steps here to create your own, but tutorials are all over the net and sites like youtube.

Posted on Oct 08, 2009

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If its showing  for example 5.00 you are with Sony's official firmware. In this case you wont be able to play the games from  memory stick. From here to make your PSP play the games from memory stick you need to Downgrade your PSP. Only way to make this possible is through Pandora Battery and Magic Memory Stick.
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?? are you already at custom firmware??

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