Locate your PSP/SAVEDATA folder on your Android device or PC. Drop the folder (e.g., ULUS10567 ) into that directory.
Unlike many shooters of its era, The 3rd Birthday relies heavily on a persistent upgrade system. Your save data tracks: 3rd Birthday Psp Save Data
Reload your original New Game+ file. The cheat often remains unlocked while your BP balance is restored. The 3rd Birthday Save Game Files for PSP - GameFAQs Locate your PSP/SAVEDATA folder on your Android device or PC