Earlier this week, Apple updated iOS to version 10.2. Next to this update, the Cupertino giant also released watchOS 3.1.1 for its smartwatches. Unfortunately, it looks like this update packed a few serious bugs as well, so the company decided to stop the update and hold it back for a while until the problems are being taken care of.
According to MacRumors, "some Apple Watch Series 2 owners had their devices bricked" right after updating their wearables to watchOS 3.1.1. The same source reveals that affected devices display a red exclamation mark that instructs them to visit www.apple.com/help/watch. This page instructs Apple Watch owners to perform a forced restart of their device and that, if this does not work, the only solution left is to take the wearable to a service.
Unfortunately, it looks like the issue is serious enough, but Apple is now working on fixing this bug. We will probably see watchOS 3.1.1 returning in a matter of days - if Apple does not decide to skip this version and jump to 3.1.2 or something similar.