The keyword "euro truck simulator 2 download ppsspp iso rom upd patched" implies obtaining the game without paying for the original PC version. SCS Software is an indie-friendly studio, but they have publicly stated:
Finding PSP Games for PPSSPP: If you're looking to download PSP games for PPSSPP, ensure you're obtaining them from a legitimate source. Some games can be directly purchased through the PlayStation Store (PSP section), and then downloaded to your PSP or PC for use with PPSSPP. euro truck simulator 2 download ppsspp iso rom upd patched
Here is a useful review and clarification of the situation, along with the best alternatives available for the PPSSPP emulator. Euro Truck Simulator 2
If you have found a community-made truck simulator ISO (such as a patched version of a classic trucking game), follow these steps to play it on the PPSSPP emulator: Section 7: Legal & Ethical Considerations The keyword