watchOS 5.3.2 (build 16U611) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2019-09-30T17:15:01Z. 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: d9992520665963425ba38c213cabb8edb0bf377d.zip.