Instructions
Press the ̶0;Power̶1; button on your Game Boy Advance device to turn it on.
Plug the GameShark cartridge into the cartridge slot on your Game Boy Advance.
Insert the game that you wish to play into the game slot in the GameShark device, then flip the ̶0;On/Off̶1; switch on the GameShark device to the ̶0;On̶1; position. The GameShark device has built-in automatic game-detection software that allows it to detect the game and install the correct codes.