watchOS 5.2 (build 16T5181f) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-01-24T18:08:20Z. The update package is 427.83 MB. This is a delta (partial) update that requires 5.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 98c1e44382a0eef5c6ba0881ab4a0965ed23658a.zip.