watchOS 5.3.2 (build 16U611) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-09-26T17:09:49Z. The update package is 45.16 MB. This is a delta (partial) update that requires 5.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e7a84b0708a27592d966e89112d36e9bf5edc8a2.zip.