watchOS 5.2 (build 16T5201c) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-02-19T18:16:20Z. The update package is 447.63 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: 8fa133ceab11a6cf0fb26185141806f2a7603783.zip.