watchOS 4.3.2 (build 15U5053b) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2018-05-30T17:06:40Z. The update package is 95.18 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: e2c09d1f3db80db21ed58644328c912313fb8a8f.zip.