watchOS 5.2 (build 16T5191d) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-02-04T18:13:40Z. The update package is 424.37 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: a11871e73ec93ef9e5ae5d6267efab0de7d686ae.zip.