watchOS 6.0 (build 17R5532f) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-07-17T17:42:50Z. The update package is 698.53 MB. This is a delta (partial) update that requires 5.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 88c96550bbf7ee282566590d6155996b473e2a55.zip.