I did this and it upgraded from 5.23 to 5.26. Shouldn't it be upgraded to 6.7?If you are already running RouterOS, upgrading to the latest version is simple. Just one click, and RouterOS will find the latest version, show you the changelog, and offer to upgrade. You can do this from Winbox, console, Webfig or QuickSet.
Simply click “Check for updates” in QuickSet, Webfig or Winbox packages menu.