watchOS 6.0 (build 17R5546f) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-07-30T17:09:34Z. The update package is 678.49 MB. This is a delta (partial) update that requires 5.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b6a52c0ab1b3a714633d4c13f5a0d8162329c5b3.zip.