watchOS 6.0 (build 17R5566a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-08-15T17:17:58Z. The update package is 714.01 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: b96271b25f4572e29eb51916bce6f427071e451d.zip.