watchOS 5.2 (build 16T225) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2019-03-27T22:04:00Z. The update package is 486.88 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: 96467b554563ffdbd0e06ae73fd5b7820218fb76.zip.