A major reason for using an emulator is the ability to store and play your legally owned games. The PPSSPP team is very clear on this point: It is a piece of software that recreates the PSP hardware environment. The legal gray area comes from how you obtain the game files (ROMs/ISOs).
Call of Duty: Modern Warfare 2 was never officially released for the PlayStation Portable (PSP). The PSP received Call of Duty: Roads to Victory , Call of Duty: Modern Warfare: Mobilized (NDS-style spin-off), and Call of Duty: Black Ops: Declassified (PS Vita). There is no official MW2 ISO for PPSSPP. call of duty modern warfare 2 ppsspp iso highly install
: Minimum 2GB (4GB or higher recommended for 60 FPS gameplay). A major reason for using an emulator is