We are still searching for game pictures and screenshots for Jet Grind Radio (Gameboy Advance). We do not have any cheats, codes, or hints yet.

Start the GBA with Jet Grind Radio and continuously press the A button until the Sega logo appears. You will hear a person scream the word Sega instead of the normal longer chorus.

Beat all Kogane-Cho levels with a Jet ranking.

Play through the game (beat ''Final Stage'') and save. Professor K can now be chosen as a playable character. He is located between Garam and Beat on the character selection screen although his image is static.

Get a Jet ranking on all Shibuya-Cho levels.