watchOS 6.0 (build 17R5532f) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-07-17T17:41:56Z. The update package is 269.22 MB. This is a delta (partial) update that requires 6.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1fee4102db923cee9963674ad02491bf1cd1b77c.zip.