watchOS 4.3.2 (build 15U70) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2018-07-09T17:07:45Z. The update package is 152.88 MB. This is a delta (partial) update that requires 4.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9343cffa7f347d6e710681c460a9c076c11684b3.zip.