Absolutely not. These releases are often months behind the official patch, contain keyloggers, and will not work with newer DLC maps like West Balkans or Scandinavia.
Steam handles patches automatically. If you need to manually select version 1.52: and go to your Library . Right-click on Euro Truck Simulator 2. Select Properties > Betas . In the Beta Participation dropdown, select: NONE (If 1.52 is the current stable version). download euro truck simulator 2 version 152 patched
Move the online_updater.exe into your game installation folder. Absolutely not