watchOS 5.2 (build 16T5181f) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-01-24T18:08:04Z. The update package is 471.34 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: f7294bd9950a2c5210fcac7d92ba7bf806bbc087.zip.