watchOS 3.1.1 (build 14S5875b) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2016-11-15T21:08:34Z. The update package is 131.02 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: 87fac52f259dc3b92bd9de0b366938243c4ba70d.zip.