watchOS 4.3.2 (build 15U5069a) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2018-06-25T17:13:22Z. The update package is 135.26 MB. This is a delta (partial) update that requires 4.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8a24d2441bc676f4fc455febe99e20268c663ada.zip.