Following its April 2015 launch, the first software update for the Apple Watch is now available Apple Watch OS 1.0.1 download through the companion Apple Watch app on your iPhone. Apple Watch OS 1.0.1 cite several performance improvements related to Siri, third-party apps, activity tracking and many more.
Watch OS 1.0.1 update 51.5 Mb in size. The software update also delivers display support for new emoji characters and more than half a dozen new languages and ‘Hey Siri’ feature works constantly than before on Watch OS 1.0.1
How to update Apple Watch OS – open the Apple Watch app on your iPhone running on iOS 8.2, iOS 8.3 or iOS 8.4 beta. Then go to General > Software Update > Download and Install
Your Apple Watch will reboot couple of times during the Watch OS 1.0.1 installation process. After the installation is complete, it will reboot automatically.
Note – Your Apple Watch must be in range of your iPhone to install the software update, and connected to its charger and charged at least 50 percent before you start software update.