watchOS 5.2 (build 16T5222a) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-03-11T17:11:50Z. The update package is 140.48 MB. This is a delta (partial) update that requires 5.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0313d446215b76c210f545235fea3864d9cb954a.zip.