watchOS 5.2 (build 16T5225a) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-03-18T17:13:45Z. The update package is 439.35 MB. This is a delta (partial) update that requires 5.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0c70ab105c35760b1d653faf0f1c7c47ee911420.zip.