Question about Sony PlayStation Portable (PSP) Console
How can I downgrade my psp (5.02 FW) with just software?
If it is a 1000 or 2000 model (fat and slim respectively) you can use a pandora battery and magic memory stick. As of this moment that would be the only way to do it....if it is a 3000 you are out of luck at the moment. Full featured custom firmware (playable ISO) is not ready yet....
Posted on Aug 04, 2009
You can downgrade by downloading older P.S.P. firmware. a site i used was psphacks.com. i suggest copying all files from your memory stick to your computer and then format it.
Posted on Jul 28, 2009
You cant it is impossible to downgrade anything above a 4.00 without using the pandoras battery method.
Posted on Mar 09, 2009
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Posted on Jan 02, 2017
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