watchOS 6.0 (build 17R5566a) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-08-15T17:16:50Z. The update package is 687.63 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: 4e4ffdfb8c1e614ba4d4385c2d6d12f20894ebfc.zip.