watchOS 6.1 (build 17S5083a) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-10-23T17:10:21Z. The update package is 728.08 MB. This is a delta (partial) update that requires 5.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 91ac4865f122576688823a5e7935fe7bf6e32bd5.zip.