watchOS 6.0 (build 17R5532f) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-07-17T17:43:28Z. The update package is 490.5 MB. This is a delta (partial) update that requires 6.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 41ee501816dee8fd60c28b5a875dde023ae81659.zip.