watchOS 5.2 (build 16T5225a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-03-18T17:15:01Z. The update package is 457.05 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: 8e113cc431bc936bc8772aa8ac184adcfeaf1e59.zip.