How to update from the tvOS beta to official release

[iMore.com]

If you've been on either the developer of public beta version of tvOS 12, here's how you can move over to the official release.

Full story from the iMore Blog...

 

[Lee_Bo]

However, the last beta release is normally the official release. So chances are even if you uninstall the beta profile there won't be an update available.