Here are some cheats and tips for the game FIFA Soccer.
Complete challenge mode:
Hold L and press Square, Circle, Square, X, Circle at the main
menu. The screen will turn black briefly to confirm correct code
entry.
Argentina league:
Hold L and press Square, Circle, Triangle at the main menu. The
screen will turn black briefly to confirm correct code entry.
All stadiums from every league:
Hold Square and press Triangle(3), Circle(2), L at the main menu.
The screen will turn black briefly to confirm correct code entry.
All International teams and cups:
Hold Triangle and press Square, X(2), Circle, Triangle(2) at the
game modes screen. The screen will turn black briefly to confirm
correct code entry.