watchOS 5.0 (build 16R5360a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-08-24T17:14:26Z. The update package is 343.14 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: abca17a62f4520ca9f909b247d2658996ae784b5.zip.