watchOS 6.1 (build 17S5068e) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-10-10T17:08:02Z. The update package is 744.61 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: 3ec45bf317ad3a44ddf54bd9ac38dd3d5f051dcc.zip.