watchOS 5.2 (build 16T5201c) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2019-02-19T18:15:57Z. The update package is 503.73 MB. This is a delta (partial) update that requires 5.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a9a953afaf2fe9a0f5c32d353f67649631038a8f.zip.