watchOS 5.1

watchOS

Version

5.1

Build ID

16R591

File Size

777.9 MB

Release Date

2018-10-30T17:21:20Z

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 (38mm, LTE) →

About This Update

watchOS 5.1 (build 16R591) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-10-30T17:21:20Z. The update package is 777.9 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 7ec5144b1a22f9b3107e6e894e9a50c082881ad0.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallFCS/patches/091-95200/EE02CA76-D65D-11E8-82C3-C2E966696644/com_apple_MobileAsset_SoftwareUpdate/7ec5144b1a22f9b3107e6e894e9a50c082881ad0.zip