Use the official Steam method. It is safer, faster, and free if you already own the base game.
Improved interior cab mixing and accessory sounds . download ets2 1.39
: Steam will automatically begin downloading the files for version 1.39. Once finished, your game will be at that version until you opt back out. RoExtended Key Features of the 1.39 Update Use the official Steam method
To download Euro Truck Simulator 2 (ETS2) version 1.39, the safest and most standard method is using the download ets2 1.39