watchOS 5.2 (build 16T5212e) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2019-03-04T18:10:59Z. The update package is 486.27 MB. This is a delta (partial) update that requires 5.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0176bb3cfd49cd4fd7a99d28251ae1452b515725.zip.