Things You'll Need
Instructions
Download and install "Rain&'s MMS Maker" from the Resource section below. Download the "500.PBP" PSP update file to your desktop (see the Resource link below).
Connect a memory stick to your computer using a card reader. A window will appear, showing you the memory stick&'s drive letter. Open Rain&'s MMS Maker.
Select your memory stick from the "Drive Letter" drop-down menu. Click "Make MMS" from the main menu of Rain&'s MMS Maker. Wait as your memory stick is converted to a Magic Memory Stick.
Disconnect the new Magic Memory Stick from your computer.