watchOS 6.1 (build 17S5076a) is an official Apple over-the-air update for the Apple Watch Series 5 (44mm, LTE), released on 2019-10-16T17:14:10Z. The update package is 358.71 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: 00dcb6db7e3d6ca20f04882f07cf9f8560bfabe3.zip.