watchOS 5.0 (build 16R5349a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-08-13T17:07:04Z. The update package is 265.47 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: 31a642e9a2a1a47a256f26e62c03d04132d30f73.zip.