watchOS 3.1 (build 14S6464) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2016-10-04T17:25:31Z. The update package is 180.65 MB. This is a delta (partial) update that requires 3.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 37afe740827d03a3b60df63516b2ef479c42d222.zip.