watchOS 6.1.1 (build 17S5433b) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-11-05T18:17:36Z. The update package is 521.18 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: 1952f104fb5a1cfcf4ca180b42d7a5eb1d34a780.zip.