watchOS 5.0 (build 16R5340g) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-08-06T17:12:13Z. The update package is 301.09 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: bc3670914387ac1e06b1efe6f19d8464ee4f6c43.zip.