watchOS 9.0 (build 14S5302d) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2016-08-01T16:47:22Z. The update package is 783.03 MB. This is a delta (partial) update that requires 8.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cfed8b65be3ab42e40b34b58c2dff9e2a2ee29e0.zip.