watchOS 5.2 (build 16T6225) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-03-27T22:04:34Z. The update package is 1.29 GB. This is a delta (partial) update that requires 16T5225a already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3b775f90fdbfdc7262d794c7e5494418ab200cc6.zip.