watchOS 6.0 (build 17R5571a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-08-21T17:11:21Z. The update package is 707.7 MB. This is a delta (partial) update that requires 5.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 996127baeb355b9c4054e2ff8dc3aba507a3e7ba.zip.