watchOS 3.1.1 (build 14S879) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2016-11-28T20:07:25Z. The update package is 958.39 MB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 395686d2db1d77493cac3c89a4e52b123d8c42c8.zip.