Allright your going to need an mms maker a memory stick and a pandora battery and an ofw of choice

Mms=magic memory stick (for all you noobs)

1.To get the maker just browse through this page to find the right mms maker for the firmware version you want.

2. Next plug in your psp to your PC and back up all your files on your PSP to your computer.

3. After that run the mms maker (and format the memory stick) and make the magic memory stick. (You will need an ofw that the maker requires)

4. Unplug your psp safely, then put in your PSP and boot your PSP holding the left trigger button until a menu pops up and then install the CUSTOM FIRMWARE NOT OFFICIAL....

5. Hopefully this did the trick....