Things You'll Need
Instructions
Connect the PSP to your computer via the PSP USB cable.
Press the "Home" button on the PSP, then use the D-pad to navigate to the "Settings" menu.
Select the "USB Connection" option and press the "X" button on the PSP. Your PSP will now connect to your computer as a "Generic Removable Hard Drive."
Open "My Computer" on your PC and browse to where your PS2 ISO is located. For more information on creating PS2 ISOs from your existing PS2 games, see the link in the "Resources" section.
Drag and drop your PS2 ISO file onto the PSP drive icon. Your PC will now copy the PS2 ISO file onto the PSP.