watchOS 6.0 (build 17R5575a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-08-27T17:30:36Z. The update package is 707.9 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: 3d74a5b84ee946079d690f7c61a9609e16d5e078.zip.