watchOS 6.1 (build 17S5059e) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-10-02T17:10:30Z. The update package is 470.93 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: 4403f4d273b2a34a84d98dcc689cd8527654151b.zip.