watchOS 3.1 (build 14S471) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2016-10-12T16:57:02Z. The update package is 60.66 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: 83116fcfdff077209442d5a581567ad516b244df.zip.