watchOS 4.3.2 (build 15U5069a) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2018-06-25T17:13:14Z. The update package is 57.75 MB. This is a delta (partial) update that requires 4.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cff7178e6d19e20a1e7b315e560cfac3c3f51be4.zip.