watchOS 2.2.1 (build 13V5413) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2016-04-06T16:50:14Z. The update package is 27.99 MB. This is a delta (partial) update that requires 2.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: de945ff5246eb7bdc070e32968dc79203fbb86db.zip.