Make sure your game version matches the save region (US, EU, or JP). For PPSSPP, you can find the savedata folder inside memstick/PSP/SAVEDATA/ .
Download Save Data for Naruto Ultimate Ninja Impact (PSP)
Unlock everything in Naruto Shippuden: Ultimate Ninja Impact on your PSP with this complete save data file. Avoid grinding for hours and jump straight into the action with all characters, missions, and skills already unlocked.