Very rare due to complexity, but some creators have attempted:
Modders often attempt to unlock or repurpose weight classes. While the PSP version is harder to mod than the PS2 version due to file compression, dedicated modders have managed to swap out fighters in lower weight classes to include modern stars like Canelo Álvarez or Gennady Golovkin (often replacing older fighters in the Middleweight or Welterweight slots). fight night round 3 psp mod
To run the Fight Night Round 3 PSP Mod, your PSP must meet the following system requirements: Very rare due to complexity, but some creators