If you don't want to play Euro Truck Simulator 2 on the latest public version and would rather play a different beta branch to play older versions, here's how to change the version of your Euro Truck Simulator 2 server.

When changing server versions, you must also change your ETS 2 game version to match the version of your server. The process for downgrading your game version can be found here.

Danger

Changing ETS 2 server versions will reset mod files and other non-default files on your server.

Please be aware that you may experience issues with any game rollback.

Changing Steam Beta Version

1
Log in to Bropanel and Stop your server.
2
In the sidebar, go to Settings.
3
Edit Steam Beta Branch with the version you want to use (A list of versions is below).
4
Click Reinstall in the top-right.
5
Select Format (keep settings), then confirm and wait for the install to finish.

Here are the currently available beta branches to choose from. They can be found here:

Euro Truck Simulator 2 Beta Branches.

The latest version is public.