watchOS 4.3.2 (build 15U70) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2018-07-09T17:07:44Z. The update package is 656.07 MB. This is a delta (partial) update that requires 3.2.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5d94e75062c7ae91e60d74d2ec7cbe7506631a47.zip.