watchOS 3.1 (build 14S464) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2016-10-04T17:25:22Z. The update package is 55.54 MB. This is a delta (partial) update that requires 3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8119f7c86ca861017d11ef37fde414097d947784.zip.