Last night, Apple released a series of new software updates. However, watchOS 5.1 had to be pulled due to problems.
The reason for this step is massive installation problems, as 9to5mac reports. After an installation has been carried out, the Apple Watch can no longer be started in many cases. The cause of the problem is currently unknown. There is currently no solution. Those affected should contact Apple. An official statement from the iGroup is still pending, but this should change soon. It can also be assumed that a new version of the update will follow shortly.
Warning: If the update has already been downloaded but not yet installed, please do not install it and wait for a new version.