watchOS 5.2 (build 16T225) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-03-27T22:04:28Z. The update package is 474.85 MB. This is a delta (partial) update that requires 5.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c56e2cd3442a337d13a0cb8ad9a8c5fa600175c0.zip.