watchOS 5.2 (build 16T5225a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-03-18T17:15:08Z. The update package is 139.26 MB. This is a delta (partial) update that requires 5.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 93cf94141cb4f6fdd2f38cd742533948fef8243f.zip.