There is a niche community project on GitHub that allows a physical PSP to act as a real-time data dashboard for the PC version of ETS2, but it does not run the game itself. Technical Constraints
Any site offering a "PPSSPP ISO" for ETS2 is likely providing a fan-made mod of a different game (like Euro Truck Simulator 1 or a modified mobile app) or potentially harmful software. Euro Truck Simulator 2 Ppsspp Iso Zip File Download For
You can play the actual PC version of ETS2 on your phone using services like StarDesk or GeForce Now if you already own the game on Steam. There is a niche community project on GitHub