watchOS 6.1.1 (build 17S5433b) is an official Apple over-the-air update for the Apple Watch Series 5 (40mm, LTE), released on 2019-11-05T18:18:48Z. The update package is 388.81 MB. This is a delta (partial) update that requires 6.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8d0203536b308f2e4cdc78c615932003bf0a8802.zip.