watchOS 6.0 (build 17R5491t) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-06-03T19:28:53Z. The update package is 676.13 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: 80255c8a7a334a71a6fd4780626acd714dd1c84f.zip.