watchOS 4.3.2 (build 15U5069a) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2018-06-25T17:13:21Z. The update package is 179.59 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: 821548fd82d381a55cae3fe239e58bcb0e846273.zip.