watchOS 6.0 (build 17R5556d) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-08-07T17:13:40Z. The update package is 689.25 MB. This is a delta (partial) update that requires 5.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 95bfd6faa0efb3bb09bedb3a250dbb05ab14a41a.zip.