watchOS 6.1 (build 17S5083a) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-10-23T17:10:26Z. The update package is 498.09 MB. This is a delta (partial) update that requires 6.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3398ae742b5c55eedf44549b9b3e0d441b8949aa.zip.