watchOS 6.1 (build 17S5059e) is an official Apple over-the-air update for the Apple Watch Series 5 (40mm, LTE), released on 2019-10-02T17:11:29Z. The update package is 253.99 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: a220cf5d4dd2f814f2d9faa3b1f46dc8ca09ce94.zip.