watchOS 5.2 (build 16T5212e) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2019-03-04T18:11:07Z. The update package is 456.74 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: c3d8203cc1167d2427b7e673e3346e0c57c25698.zip.