watchOS 5.0 (build 16R5349a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-08-13T17:07:03Z. The update package is 343.08 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: 3da35ae7f5c17a9055b075cf94fe64b5843e4917.zip.