watchOS 5.0 (build 16R5334f) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-07-30T17:10:24Z. The update package is 296.56 MB. This is a delta (partial) update that requires 5.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 03e339b24b821c8419b40b894f10a4c191ed4d9d.zip.