The PSP version includes a special “ESPN Classic” mode that recreates legendary fights. Completing these challenges is the only way to get some of the flashier gloves.
Here’s the complete unlock table for quick reference: how to unlock all gloves in fight night round 3 psp
While there isn't a direct "unlock all gloves" code, you can use these passwords in the Create-A-Champ menu (under First Name) to unlock other major content: Unlocks all arenas and boxing boards. Unlocks the heavyweight boxer 5. Alternative: Game Save Files The PSP version includes a special “ESPN Classic”