watchOS 5.1

watchOS

Version

5.1

Build ID

16R591

File Size

749.74 MB

Release Date

2018-10-30T17:21:42Z

Update Type

Normal release

Delta update - requires 4.3.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm) →

About This Update

watchOS 5.1 (build 16R591) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2018-10-30T17:21:42Z. The update package is 749.74 MB. This is a delta (partial) update that requires 4.3.2 to already be installed on the device - it cannot be applied from scratch. This update is no longer signed by Apple, meaning it can no longer be downloaded and applied on-device through Settings.

The OTA payload file is 57c280dd2ff8043bcb1ed3d3e2dcfe1a21fe99b3.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallFCS/patches/091-90054/16F74250-D65D-11E8-98F9-D3B9745073DF/com_apple_MobileAsset_SoftwareUpdate/57c280dd2ff8043bcb1ed3d3e2dcfe1a21fe99b3.zip