watchOS 5.0 (build 16R5283r) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2018-06-11T17:07:03Z. The update package is 24.31 MB. This is a delta (partial) update that requires 5.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5311981fcc71143a91bcfd1b5c834a74510a4ef7.zip.