It s not possible to "Downgrade" A Psp that has already been patched
Improved Answer: You can easily downgrade it without the Pandora battery since you didn't update your PSP passed 5.02. I suggest you don't downgrade since it would be worthless to do so.
how to downgrade psp 4.01 version...i used Pandora and magic memmory but no responce from the psp?
It is not yet possible to downgrade a PSP 3000 series.
well you cant downgrade your psp but if you go to youtube, there are some fantastic videos on how to do it! just type in "how to downgrade psp's" or "psp downgrade"
You can't do it.
go to www.customizepsp.com there they will show you different downgrades for your psp.
yes u will have to downgrade
download
NOPE, SORRY. Answer 2: lol yes you can downgrade it easily as long you don't update your PSP passed 5.02 which you haven't yet, I suggest you keep it at this version for now if you custom firmware your PSP.
Downgrade your PSP system to version 1.5 by turning your PSP battery into a Pandora's battery. You need are an original PSP battery (with more than 50% charge) and a Memory Stick Pro Duo with 1GB memory or above Users can downgrade their PSP to version 1.5 because they can upgrade their PSP to any version from 1.5. If you upgrade your PSP to version 3.51, you can play any downloaded games and run any applications.
You Can Do It Using Pandora Battery.
There is no way you can downgrade a PSP-300 or PSPgo at the moment.
I'm sorry, but you can not downgrade it back to firmware 6.2 Any firmware after around version 5.5 cannot be downgraded i think. It also depends whether you have a psp 2000 or psp 3000 I have a psp 3000 and it was too late for me to downgrade