Go to the main menu and HOLD R and press Right, Right, Left, Left, Up, L. During the fight press Black + White to win fight.
Get Max Stats for Tourney & Exhibition Modes
Go to the main menu and HOLD R and press Left, Up, Up, Down, Right, L.
Get 2X Punch Damage
Go to the main menu and HOLD R and press Right, Down, Left, Up, Left, L.
Get All Default Boxers & Arenas
Go to the main menu and HOLD R and press Right, Down, Up, Left, Up, L.
Get default boxers, arenas & Rocky statue
Go to the main menu and HOLD R and press Right, Right, Right, Left, Right, L
Get 2X Speed Boxing
Go to the main menu and HOLD R and press Down, Left, Down, Up, Right, L.
Get default boxers, arenas & Rocky statue & Mickey
Go to the main menu and HOLD R and press Right, Down, Left, Up, Left, L.
Get Max Stats for Movie Mode
Go to the main menu and HOLD R and press Right, Down, Down, Up, Left, L.