watchOS 5.1

watchOS

Version

5.1

Build ID

16R5559d

File Size

1.33 GB

Release Date

2018-09-18T17:23:24Z

Update Type

Normal release

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm) →

About This Update

watchOS 5.1 (build 16R5559d) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2018-09-18T17:23:24Z. The update package is 1.33 GB. This is a full OTA update that can be applied from any compatible base version. 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 7ad704ff12aac40d522b39e0cd41d98c62332bc0.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/091-96921/A8FEE770-B853-11E8-873B-AA616D2878E5/com_apple_MobileAsset_SoftwareUpdate/7ad704ff12aac40d522b39e0cd41d98c62332bc0.zip