watchOS 5.2 (build 16T5181f) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-01-24T18:08:22Z. The update package is 398.94 MB. This is a delta (partial) update that requires 5.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c7a9a8e0ffdeb84530531a085ca0f6aba803ccad.zip.