In the dropdown menu, select temporary_1_39 - 1.39.x for incompatible mods . Steam will automatically download the 1.39 version files. Key DLCs for Version 1.39
. Version 1.39 was a major update released in November 2020 that introduced ownable low-bed trailers and a reskinned Calais. SCS Software's blog How to Access Version 1.39 Euro Truck Simulator 2 1.39 All Dlc Download