Okay guys so this one may actually be somewhat useful. I found my old PSP and decided I'd put some emulators on it, SNES, Game Boy, etc. One of the things you need to do beforehand is install custom firmware on your PSP. This is how I did it.
Step 1: Check Your Current Firmware Version
The custom firmware you put in your PSP depends on what firmware you currently have installed. To see what you have, go to "SettingsÃÂ» System SettingsÃÂ» System Information". I had version 6.60 (the most recent).
After this, plug the PSP into your computer.