watchOS 5.2 (build 16T225) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-03-27T22:04:29Z. The update package is 437.02 MB. This is a delta (partial) update that requires 5.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c01c574564e97ce40be44bbfa5df96533d714cca.zip.