How to Play ISO on PSP Slim
 
The ability to play homebrew games is actually very easy and not illegal at all, and Sony is starting to reach out to its independent software developers asking them to create games for the PSP GO. For regular PSP devices, the fun of homebrew ISO games can be easily taken advantage of by merely knowing where to put the game.

Difficulty: EasyInstructions

Things You'll Need:

Sony PSP

PC

USB cable

Memory stick

Step 1 Connect your PSP to the computer and your memory stick should pop up in a window. There will be many folders there for you to add/remove games, movies, music and photos.

Step 2 Locate the "ISO" in the memory stick root. The root of the memory stick is the actual window that is displayed when you open the memory stick. It has folders inside it like "PSP" and "VIDEOS."

Step 3 Copy your homebrew game, which will be in ISO format, and paste it into the "ISO" folder. Depending on the size of the game, it may take a few minutes.

Step 4 Disconnect the PSP when it has finished moving the file over, and navigate to the PSP game menu, where your game will be waiting. Select it and play.