watchOS 2.0 (build 13S5255c) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2015-06-23T17:51:04Z. The update package is 24.68 MB. This is a delta (partial) update that requires 2.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2d39f99863b85e05cf32b7048af094d6dcf96053.zip.