watchOS 4.3.2 (build 15U70) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2018-07-09T17:07:42Z. The update package is 823.86 MB. This is a delta (partial) update that requires 2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 71776184b8c5a4af19037ceb37dddb55ad2224ef.zip.