The server files are stored centrally and only have to be updated by a single server owner on the box. You may check if you need to update the game files by logging into the game panel https://gp.armahosts.com/ Select the game server you want to update then by the start/stop button is the More option. Select that and click "Update Arma 3". Once that is completed then restart your server and you will be ready to go.
