watchOS 5.2 (build 16T5212e) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-03-04T18:11:03Z. The update package is 457 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: 76a4d8fee25942a579a06169ea9b48431120c722.zip.