This is the actual PSP port of MK: Deception . Many "MK9" downloads are simply this older game with a modified title screen or character skins.
Copy the save data folder and paste it into Storage/PSP/SAVEDATA/ . mortal kombat 9 ppsspp file download fix
This is arguably the most common issue with PPSSPP, and it has several potential causes: This is the actual PSP port of MK: Deception
Modified ISO files are prone to instability. If your game crashes on startup, freezes during X-Ray moves, or displays a black screen, apply these verified fixes within your PPSSPP settings menu. Graphics Settings Optimization freezes during X-Ray moves
Are you getting a or just a black screen? What device are you using (Android, PC, or iOS)?