https://wccftech.com/apple-has-fixed-apple-watch-bricking-issue-with-watchos-5-1-1-release-download-now/

Lat Tuesday, Apple had seen fit to release watchOS 5.1 for all supported Apple Watch devices. Some Apple Watch Series 4 users reported that their devices were bricked after the update as it was stick at the Apple logo. This led Apple to pull the update until a fix was available. Now, Apple has released an updated version of the firmware, watchOS 5.1.1 which fixes the bug that rendered some Apple Watch units as non-functional. Let’s dive in to see some more details on the bricking issue.

As to begin with, not all Apple Watch units were impacted by the watchOS 5.1 update. However, those which were affected contacted Apple and the company had been sending out replacement Apple Watches. For those of you who have had their devices bricked will be fixed by Apple and won’t be fixed with the latest watchOS 5.1.1 update.