watchOS 5.3.2 (build 16U611) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2019-10-09T17:07:22Z. The update package is 1.34 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fbafa4a85e91d3cfe7e2fd60278aea80d0c8fff4.zip.