watchOS 6.1 (build 17S5068e) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-10-10T17:08:30Z. The update package is 723.03 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: a146f29dc0852d833577869683c8c31c7a858d69.zip.