Firmware: View and Update | iOS
To view the current firmware version and check for a pending update,
On the NOW tab, tap the Settings icon in the upper rightmost corner,
Scroll down to General, then tap Device Details,
Tap the Firmware update option, if a newer version is available.
For stability, we strongly recommend keeping your NOWATCH on the charger and avoid interrupting the installation process.
During installation, your NOWATCH and app may disconnect multiple times; this is expected.