If you are using an older, non-Steam version, you can use the official Updater or download specific patches from the official download page Reverting to Version 1.52:
So what are you waiting for? Click the download link and get ready to shift into high gear with Euro Truck Simulator 2 version 1.5.2 patched! download euro truck simulator 2 version 152 patched
It is highly recommended to back up your profile before updating, as save files may not be backwards-compatible if you decide to downgrade later. Get Ready to Hit the European Roads with