Unlock All Gadgets
At the mode select screen, hold R1 + L1 + R2 + L2, then enter Go Wild! as a password.
Disable All gadgets
At the mode select screen, hold R1 + L1 + R2 + L2, then enter Limited! as a password.
Hard Mode
At the mode select screen, hold R1 + L1 + R2 + L2, then enter Hard! as a password.
Normal Mode
At the mode select screen, hold R1 + L1 + R2 + L2, then enter Normal! as a password.