Websites offering "ETS2 PPSSPP ISO" or "highly compressed zip" files are generally providing or scam software .
If you choose to download a fan-made mod for PPSSPP, be extremely careful: Euro Truck Simulator 2 Ppsspp Iso Zip File Download For
Since there is no native PSP ISO, you can play the official game on mobile devices using or remote play : Websites offering "ETS2 PPSSPP ISO" or "highly compressed