watchOS 6.0 (build 17R5521e) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-07-02T18:09:49Z. The update package is 674.9 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: 30ccb327d5f19b827629fe486f6b04c1252f9654.zip.