Watch OS 8.6

On the iPhone associated with your Apple Watch, go to Select Discover.

Now, select watchOS. Select Download. If asked, sign in with your Apple ID.

When prompted for permission to install a profile, tap Allow. Start the installation. When prompted, enter your Passcode. To confirm, tap Install.

To restart your Apple Watch, tap Restart. The installation process resumes after your Apple Watch has rebooted

Apple provided the ability to update your Apple Watch through the Settings app on the Apple Watch itself with watchOS 6.

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