watchOS 4.3.2 (build 15U5069a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-06-25T17:13:19Z. The update package is 56.64 MB. This is a delta (partial) update that requires 4.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3f1db51f903da58340e5cf7ddd7af3f813855993.zip.