watchOS 6.0 (build 17R5521e) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-07-02T18:10:48Z. The update package is 666.38 MB. This is a delta (partial) update that requires 5.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ab7a50d1b5e789379c3a901b8bb18b02c25cace2.zip.