watchOS 6.0 (build 17R5571a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-08-21T17:11:16Z. The update package is 708.86 MB. This is a delta (partial) update that requires 5.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d3d2a3bf7d020edb5cc3b18fcc9a2aff3d000ff6.zip.