watchOS 6.0 (build 17R575) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-09-11T18:36:13Z. The update package is 795.86 MB. This is a delta (partial) update that requires 5.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7fe402542c8504b264deafc7184f08e20f61e0c1.zip.