watchOS 6.0 (build 17R575) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2019-09-11T18:35:49Z. The update package is 713.41 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: 719b7b3d02bedbda6addcee485083963f0cc7e41.zip.