watchOS 5.2 (build 16T5201c) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-02-19T18:15:52Z. The update package is 439.53 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: c88e1bf52c508b26a4ae5a06a7a19a63e5f3c946.zip.