watchOS 5.0 (build 16R5334f) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2018-07-30T17:10:04Z. The update package is 362.59 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: d4d780faf745b0b960663e0ea6110932675225c6.zip.