watchOS 5.0 (build 16R5349a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-08-13T17:06:52Z. The update package is 283.83 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: ba2b049c0833ff1adb7c43f7e7eb0d84887b4202.zip.