GameShark cart problem

I got a GameShark cart for Saturn. Now what? I power the saturn on and it boots and goes to the CD screen like it always did. How I access the GameShark menu? I tought the GameShark menu would appear after the boot.

I tried to clean the car't's contacts and already tried on another saturn but nothing changed.

The only thing I can suggest that you haven't already tried is to insert the cart, and then pull it out very slightly - sometimes that fixes contact problems. Other than that, it sounds to me like you've got a dead GS cart...