Since NetherRealm never developed or licensed MK9 for PSP, any “MK9 PSP ISO” found online is:
Unfortunately, there’s no official PSP port of MK9. However, if you own a PS Vita, you can enjoy a streamlined mobile-friendly version (optimized for touchscreen controls). For PSP players, consider playing Mortal Kombat: Shaolin Shaolin (2003) or Mortal Kombat vs. DC Universe (2008), both available on the system. mortal+kombat+9+psp+iso+download+exclusive
If you’re eager to experience MK9 legally: Since NetherRealm never developed or licensed MK9 for
While ISO files for MK9 may appear on pirate sites as “exclusive” PSP downloads, these carry significant risks: if you own a PS Vita