watchOS 5.2 (build 16T225) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2019-03-27T22:03:58Z. The update package is 503.23 MB. This is a delta (partial) update that requires 5.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c2aec75bab82666866afe6ab5cc088f4d0d40d9f.zip.