Things You'll Need
Instructions
Connect your PSP to your computer using the USB cable.
Click "View files/folders" from the window that appears. A new window will appear, and you will be able to see the files on the PSP's memory stick.
Locate your PSP ISO file that you have on your computer, and right-click it. Click "Copy" from the small menu that appears.
Go back into the PSP's memory stick from the computer, and right-click the "ISO" folder.
Click "Paste" from the menu that appears to transfer the ISO file to the PSP memory stick.
Press the "O" button on the PSP to disconnect the PSP after the transfer is complete.
Select the game from the PSP menu's game section. The PSP will automatically mount the ISO file, making it look like you have inserted the physical game disc into the PSP. After you select the game, the game will start as it normally would with a physical disc game.