watchOS 6.0 (build 17R5532f) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-07-17T17:42:55Z. The update package is 690.9 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: bd2e1a21d0731e0247f9edc27c86c9a7aba5656a.zip.