watchOS 9.0 (build 14S5247t) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2016-06-13T19:31:40Z. The update package is 757.45 MB. This is a delta (partial) update that requires 8.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e1a78664d2fea7f52429412e59b4069e839fa578.zip.