watchOS 4.3.2 (build 15U70) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2018-07-09T17:08:20Z. The update package is 83.41 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: 39b32d428a3efa31a62972f3261e7573583d852e.zip.