watchOS 3.1 (build 14S464) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2016-10-04T17:25:16Z. The update package is 573.19 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: 3df6964529440b16b8f4bb6477e334fb4201d586.zip.