We periodically update Starling Home Hub's firmware to improve reliability and add new features. Starling Home Hub automatically keeps its firmware up to date with no action required by you. Your hub checks for updates when it's idle, usually in the middle of the night.
If you wish, you can disable automatic firmware updates by going to the Starling Home Hub app and deselecting Enable automatic firmware updates under Hub, Home and Product Settings. Even with automatic updates disabled, you will still be notified of an available firmware update when you open the Starling Home Hub app, and you'll given the option to install it.