watchOS 5.0.1 (build 16R381) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-09-27T20:08:46Z. The update package is 757.95 MB. This is a delta (partial) update that requires 4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 44c754585da36cb0b59a7543c18923b7a83c1ec6.zip.