watchOS 3.0 (build 14S5321a) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2016-08-15T16:54:17Z. The update package is 566.81 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: 2b03387c630d43638c5672d35a4bb30b0ca14b5a.zip.