This article explains how to check the version of Tulip OS that your gateway is running.
Checking through the Diagnostics page (supported in all versions)
From the Gateway Portal, go to the Diagnostics page.
You can check the OS version in multiple places on this page. You can check:
Device info
OS Info
Front End
Checking through the "Contact Tulip" link
Warning: This method is not in all versions of Tulip
Click on "Contact Tulip" at the bottom of any screen.
The version is listed in the software version