watchOS 6.1.1 (build 17S5433b) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-11-05T18:18:20Z. The update package is 731.46 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: 12347b415544f70784fef6a76b20a42a08ec451c.zip.