watchOS 5.2 (build 16T6225) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-03-27T22:03:33Z. The update package is 1.26 GB. This is a delta (partial) update that requires 16T5225a already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f1fa78dc247ae0038fb8b9808584dfa40bed7fff.zip.