watchOS 9.0 (build 14V5214d) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2017-02-06T17:59:28Z. The update package is 846.38 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: a1e86c515649152fe7e761cd97f885108b737427.zip.