Yes. But with caveats.
The PSP version of Fight Night Round 3 is unique. Unlike the console versions which used the right analog stick for punching, the PSP used the face buttons (X, Square, Triangle, Circle) for directional punches while the analog stick controlled footwork. It feels weird at first—like playing a fighting game combo—but once mastered, it is arguably the most portable, tight boxing sim ever made. fight+night+round+3+psp+mod
A properly modded version gives you:
ms0:/ISO/ on your PSP or load in PPSSPP.