watchOS 6.0 (build 17R5546f) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-07-30T17:10:37Z. The update package is 708.41 MB. This is a delta (partial) update that requires 5.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d9d277b3944b8ac639aa94b495e6aa3615e46e6d.zip.