watchOS 6.0 (build 17R5575a) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-08-27T17:28:35Z. The update package is 687.8 MB. This is a delta (partial) update that requires 5.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3587cc0a91f46a0635dd73cae2e7e966bd3b3d20.zip.