watchOS 5.2 (build 16T225) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-03-27T22:03:35Z. The update package is 982.27 MB. This is a delta (partial) update that requires 3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5a5bd2faefb0c3be41cdcb43ad9db8c980783a03.zip.