watchOS 5.2 (build 16T5191d) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-02-04T18:14:17Z. The update package is 106 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: cdd6e79526718621807c1b1312e2448f19fa6f15.zip.