watchOS 6.0 (build 17R6575) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2019-09-11T18:34:52Z. The update package is 467.5 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: 4d906fc0128394a3f70717eb67b817e1413e3086.zip.