GT Advance: Championship Racing

At the "Start" screen, hold L + R and press Up/Left, B. If done correctly, you will hear a chime.

Password: 2QjD +D1Q 9Fy2 5B0C

Go to enter password in options mode and enter the password 2tgD +D1Q @TdH wGCC.

Status | Password

50% of cars unlocked | /6Kb /xMi irLM +/22
All cars and modes unlocked | S/PD W1/H L8Q8 >VbB

LEFT, RIGHT, UP, DOWN, L, L $15,000
LEFT, RIGHT, UP, DOWN, A, A All Weapons
LEFT, RIGHT, UP, DOWN, A, L Armor
LEFT, RIGHT, UP, DOWN, B,B Health
LEFT, RIGHT, UP, DOWN, A, R Lower Wanted Level
LEFT, RIGHT, UP, DOWN, R, A Raise Wanted Level
LEFT, RIGHT, UP, DOWN, B, R Toggle Gang Hostility
LEFT, RIGHT, UP, DOWN, R, R Wanted Level Max or Zero

Before you can do this go in the cheat mode with A+B+START.