https://www.theverge.com/2018/11/5/18065264/apple-watchos-5-1-update-brick

Apple has released a new watchOS 5.1.1 update, which fixes the last update’s issues with bricking users’ Apple Watches. The latest watchOS update includes more than 70 new emoji released with iOS 12.1, new full-screen color watchfaces, and support for group FaceTime audio for up to 32 people.

watchOS 5.1 was released and quickly pulled last week, after users reported the update rendered their watches unusable during the installation. Affected users had no options other than calling Apple support and waiting for a replacement watch, as the watch can’t be plugged into a computer if something should go wrong. Apple Watch owners can rest assured that today’s update is specifically built not to brick their devices.