watchOS 6.0 (build 17R5566a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-08-15T17:18:05Z. The update package is 363.45 MB. This is a delta (partial) update that requires 6.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2a5c37665f3d18f88ac97cc3dbb6918689f48cd9.zip.