watchOS 5.2 (build 16T225) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-03-27T22:03:22Z. The update package is 988.61 MB. This is a delta (partial) update that requires 3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a92907d8dcaacbeb4b0698cd187575c592c71df9.zip.