watchOS 5.2 (build 16T6225) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-03-27T22:03:32Z. The update package is 79.57 MB. This is a delta (partial) update that requires 5.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4fac25a2d70e85ac1e7974e35288ae44529b555e.zip.