watchOS 6.0 (build 17R5532f) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-07-17T17:43:38Z. The update package is 714.9 MB. This is a delta (partial) update that requires 5.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a13ff18fac251b97d63bd4f080249dffa6804e7e.zip.