watchOS 5.2 (build 16T6225) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-03-27T22:04:32Z. The update package is 179.07 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: 501b8fc057c3db5098ec7a9417514ca8fc095815.zip.