watchOS 5.2 (build 16T5222a) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-03-11T17:11:47Z. The update package is 457.18 MB. This is a delta (partial) update that requires 5.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 56136c68d30a572a58e63b3040ffe48da50962fe.zip.