watchOS 6.0 (build 17R5546f) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-07-30T17:09:35Z. The update package is 400.75 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: 6711eac49ac45a4e28fe5c3b85a5f026c2a18db4.zip.