watchOS 6.0 (build 17R5575a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2019-08-27T17:30:01Z. The update package is 423.92 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: 9274316cafcb912495b3a388ee0deaa965402f6c.zip.