watchOS 5.1

watchOS

Version

5.1

Build ID

16R591

File Size

749.73 MB

Release Date

2018-10-30T17:21:43Z

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 2018-10-30T17:21:43Z. The update package is 749.73 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 27b42cf34ad133a33153529cf444fb2f259c39aa.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallFCS/patches/091-92984/B2A201B8-D65D-11E8-B6BD-B851F880783F/com_apple_MobileAsset_SoftwareUpdate/27b42cf34ad133a33153529cf444fb2f259c39aa.zip