watchOS 5.2 (build 16T225) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-03-27T22:04:05Z. The update package is 841.32 MB. This is a delta (partial) update that requires 4.2.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0c918399c3754373cd21341d461fbcab0d04f688.zip.