How to downgrade PSP Slim?

How can i downgrade my psp slim?

• i want to downgrade my psp slim cus i want to download games online. i curentrly have 3.73. is there a way i can do it by the internet without having to do anything manually just by ...show more

• Answer:

  You can't change your battery without opening it up unless you have custom firmware already. If you have a pandora's battery you can make a magic memory stick with the totaleasynewbinstaller. Really easy. I say just go to dealextreme.com and get the (fake) tool battery which is not brand named but does the exact same thing as a pandora's battery would for 10.50. Then just use the totalnewbeasyinstaller with it from there. There's a video (or a few) on google that explain what to do after getting the battery. If you wanna do it yourself and not open up the battery you need a friend with CFW