watchOS 6.0 (build 17R5491t) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-06-03T19:29:06Z. The update package is 673.34 MB. This is a delta (partial) update that requires 5.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 65896f1a4bb5ead9923e4e8280a1aa121f171376.zip.