watchOS 5.2 (build 16T225) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2019-03-27T22:03:48Z. The update package is 520.16 MB. This is a delta (partial) update that requires 5.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 67ac9e85c37bd458534888bda00a6fa18a582980.zip.