watchOS 5.2 (build 16T225) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-03-27T22:03:22Z. The update package is 989.06 MB. This is a delta (partial) update that requires 3.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 06c6399b715d9c6b7d538dd4064c9b01bf6961f8.zip.