watchOS 5.2 (build 16T5191d) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-02-04T18:14:23Z. The update package is 423.27 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: 33c71ff7a0626743d81f5b338754757250c84761.zip.