watchOS 5.0 (build 16R5322d) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2018-07-17T17:11:14Z. The update package is 702.76 MB. This is a delta (partial) update that requires 4.2.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2e8c816b2f8ab66bd3ca8e775707062ee761046c.zip.