watchOS 6.0 (build 17R5556d) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2019-08-07T17:14:06Z. The update package is 459.11 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: fdf045d39e0c5829811191c6744b4ed1388a2d99.zip.