watchOS 5.2 (build 16T5212e) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-03-04T18:10:53Z. The update package is 438.37 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: 9c1a13a6d66020c1c90ddf8e411c8056a8a623b4.zip.