watchOS 5.3.2 (build 16U611) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-09-26T17:09:30Z. The update package is 997.87 MB. This is a delta (partial) update that requires 3.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1931a424680518df49c3d9c5e37cc54be2ac0ca7.zip.