How do you downgrade psp's from 4.05 to 3.90 I want to downgrade to be able to play more games...

Question

I've been researching this for like two days. I want to downgrade my current psp from 4.05, to 3.90 or 1.50. I have alot of the files nessisary, but lack the information on how to do it. If someone could tell me I would greatly appreciate it...most the time its been telling me currupted files when I get halfway through the process, and I need to know how to fix that part so it doesnt show them as currupted.

Answer 1

Check out http://www.squidoo.com/psp-repair They can show you how to fix anything on your psp:  firmware, the LCD screen, joystick, whatever.

They will also teach you to downgrade, play non UMD movies, download games ect

Answer 2

What you need is a pandora battery, here is a link where you can find one: http://www.pandorasales.com/psp-pandora-...