Things You'll Need
Instructions
Turn off your Sony PSP Slim by sliding the power button up for two seconds and wait as the PSP boots down. Remove the PSP battery and memory stick from their respective places and put them aside.
Insert your Magic memory stick with the custom firmware into the PSP card reader and insert the Pandora battery into the PSP battery cradle. Your PSP Slim will now turn on all by itself and display white text on a black screen.
Press the "X" button twice and wait as custom firmware is installed onto your PSP Slim. Press the "X" button one more time after the process completes to turn the PSP off.
Remove the Pandora battery and Magic memory stick from the PSP Slim and place the normal ones back into your PSP. Turn your PSP Slim on.
Connect your PSP Slim to your computer and a window will appear that will give you access to your PSP memory stick. Navigate to where you have your ISO game(s) and right-click the file. Click "Copy" and go back to the "ISO" folder and right-click it. Click "Paste" and wait as your game(s) are transferred to the PSP Slim. Disconnect your PSP Slim when the transfer is complete by pressing the "O" button on the PSP gamepad.
Go into the PSP menu and into the game section. Your game(s) will now be there. Select one with "X" to play.