Things You'll Need
Instructions
PSP Backups
Turn on your Sony PSP and wait as it boots up. When your PSP boots up and is at the PSP menu, connect the PSP to your computer using the USB cable.
Open an explorer window on your computer and navigate to your PSP memory stick. There will be a few folders in the memory stick. Open the "ISO" folder.
Locate the ISO file--the PSP game backup--and copy it into the ISO folder and wait as it transfers over. Once the transfer is complete, disconnect the PSP from your computer.
Navigate to the game section on your PSP and select it to play.
Homebrew Games
Turn on your PSP and connect it to your computer. Navigate to the PSP memory stick.
Locate the "GAME" folder found in the PSP memory stick and open it. Place your PSP homebrew game into this folder and wait as it transfers.
Disconnect the PSP from the computer and select the game from the PSP menu.