If you play the game using the PPSSPP emulator on PC, Android, or an iOS device, you can use external texture replacement packs. These mods do not alter the game file itself. Instead, the emulator replaces old textures with high-definition, custom-made PNG or DDS images on the fly. 3. Game Saves (Roster Updates)
Modern mods for the PSP version generally fall into three categories: Roster & Save Data Updates fight+night+round+3+psp+mod
The active modding scene for Fight Night Round 3 (PSP/PPSSPP) If you play the game using the PPSSPP
Unzip the downloaded save file to find a folder named something like ULUS10060SAVE00 or similar. or an iOS device