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 731.94 MB. This is a delta (partial) update that requires 5.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bcc13b77c54812076ab404bebbfdd6a699f1c294.zip.