Instructions
Insert the GameShark SP into the game slot of the Game Boy Advance.
Insert your Game Boy Advance game into the GameShark SP's game slot.
Turn your GameShark SP on, then turn your Game Boy Advance on.
Select your game from the list of games on the GameShark's main menu.
Select the cheats you wish to activate for your game. Once you are ready to play, press the "Start" button.