watchOS 5.0 (build 16R5313d) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2018-07-03T17:11:41Z. The update package is 579.38 MB. This is a delta (partial) update that requires 4.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: dbfe9c5581bf3c9143e2dd3559e22597bb44bde9.zip.