Steam allows you to "roll back" to version 1.27 easily. Open your Steam Library , right-click on Euro Truck Simulator 2 , and select Properties . Go to the Betas tab and choose temporary_1_27 - 1.27 for incompatible mods from the dropdown menu.
To understand what you lose by sticking with 1.27, consider this feature comparison: ets2 1.27 download
: Launch the Steam client and navigate to your Library . Steam allows you to "roll back" to version 1
: Right-click on Euro Truck Simulator 2 in your game list and select Properties . right-click on Euro Truck Simulator 2
If you own the game on Steam, this is the safest and easiest method. Valve keeps older versions of the game on their servers for exactly this purpose.