Instead, play Unchained on PPSSPP or emulate the real MK9 via Xenia/RPCS3 for the true experience. This guide is for informational and educational purposes only. Users are responsible for complying with all applicable copyright laws.
A necessary clarification up front: Mortal Kombat 9 (also known as Mortal Kombat (2011) ) was never officially released for the PlayStation Portable (PSP). Therefore, you will not find a native, commercial "Mortal Kombat 9 PPSSPP file" that runs directly as a PSP ISO.