watchOS 4.3.2 (build 15U5069a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-06-25T17:13:24Z. The update package is 114.9 MB. This is a delta (partial) update that requires 4.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cf135b015f872a05c45a2c06a6c682fc06160168.zip.