watchOS 6.1 (build 17S5083a) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-10-23T17:10:36Z. The update package is 496.92 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: ce243620655c71181a6db2ef25ff6f2f81b6e68f.zip.