watchOS 3.0 (build 14S5278d) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2016-07-05T16:46:53Z. The update package is 497.27 MB. This is a delta (partial) update that requires 2.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a9bf8a87964a5a0d0a3348b57e356f4d57a78514.zip.