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.