watchOS 4.3.2 (build 15U5053b) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2018-05-30T17:06:22Z. The update package is 315.05 MB. This is a delta (partial) update that requires 4.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 579b65005defe1daa37fb8cb33df0533312b200b.zip.