Things You'll Need
Instructions
Installing Custom Firmware
Turn off your Sony PSP and remove the battery and memory stick from their respective ports. Place these aside for now.
Insert the Magic memory stick into the PSP. This is what will hold the new firmware. Insert your Pandora battery into the PSP and the device will turn on by itself.
Press the "X" button twice to install the new custom firmware onto your PSP. Wait until the program asks you to press the "X" button a third time to shutdown the PSP.
Remove the battery and memory stick and replace them with the normal ones you removed earlier. Turn your PSP on and you will be running custom firmware.
Installing the ISO
Connect your PSP to your computer using the USB cable and select "USB Connection" from the PSP menu. A new window will appear on your computer, giving you access to the PSP memory stick.
Open the "ISO" folder on the PSP memory stick. This is where your games will go. Locate the ISO file you have on your computer that you would like to transfer to the PSP and right-click it. Click "Copy" and go back to your "ISO" folder on the PSP.
Right-click the "ISO" folder and click "Paste" to transfer the game onto the PSP memory stick. Press the "O" button after the transfer is complete to safely disconnect the PSP from the computer.
Select the game from the PSP menu to play.