watchOS 6.0 (build 17R5556d) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2019-08-07T17:14:21Z. The update package is 191.08 MB. This is a delta (partial) update that requires 6.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 90890566fe791d56572338fd3ebd6e3a9a04a3b3.zip.