watchOS 5.1

watchOS

Version

5.1

Build ID

16R5577c

File Size

778.51 MB

Release Date

2018-10-09T17:12:07Z

Update Type

Normal release

Delta update - requires 4.3.1 installed first.

Download OTA

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

About This Update

watchOS 5.1 (build 16R5577c) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2018-10-09T17:12:07Z. The update package is 778.51 MB. This is a delta (partial) update that requires 4.3.1 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 94f9dd9fe602c84c95ab12d320309f292fbfcc68.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-12109/BB877062-C8BE-11E8-BEB6-97826D2878E5/com_apple_MobileAsset_SoftwareUpdate/94f9dd9fe602c84c95ab12d320309f292fbfcc68.zip