How to update an apple watch?

Before you update, remove the beta profile from your device. To view and remove profiles: Open the Apple Watch app on your iPhone, tap the My Watch tab, then go to General > Profiles. Tap the beta profile that you want to remove, then tap Delete Profile. Enter your iPhone passcode if requested. read more

The watchOS 4.3.1 update will download and transfer to your Apple Watch and Apple Watch will reboot to apply the update. You can follow the progress on the Apple Watch screen, and once it's done, you'll be all set. read more

When finished, Apple Watch will restart. If Something Goes Wrong If, for some reason, the download freezes up or you can't get the software to install on Apple Watch, you can try restarting the device. Restarting. Hold down the Side button until the Power Off slider appears. Slide the bar to shut off Apple Watch. read more