watchOS 6.0 (build 17R5546f) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2019-07-30T17:09:44Z. The update package is 741.07 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: e21f9c5c0d0e72b12c6278634708f4b89d44a154.zip.