watchOS 6.1 (build 17S5076a) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-10-16T17:12:26Z. The update package is 728.21 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: 77f1ba7391005e6aee032a64ab3a68ca30e2957d.zip.