watchOS 6.0 (build 17R5546f) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-07-30T17:09:27Z. The update package is 684.42 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: ce1a4fca42fdad2d80268c4441a7b7ab1b89f64c.zip.