watchOS 6.1 (build 17S5054e) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-09-23T17:03:46Z. The update package is 691.03 MB. This is a delta (partial) update that requires 5.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7a2d818e81f13e61725098704206fcdcfc838fe3.zip.