watchOS 6.1 (build 17S5059e) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-10-02T17:10:59Z. The update package is 304.32 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: b21aa1d3382d794f015ee4d5374542254af84ee3.zip.