Things You'll Need
Instructions
Connect your PSP to your computer with the USB cable and select "USB Connection" to place the PSP into USB mode. You will see the files of your PSP memory stick on your computer.
Locate the ISO file you want to place on the PSP and right-click it. Click "Copy" and go into the PSP memory stick.
Right-click the "ISO" folder and click "Paste" to transfer the ISO game to the PSP. Disconnect the PSP from your computer and you will be returned to the PSP menu.
Go into the game section of the PSP menu and you will see the ISO game. Select it and your game will start.