watchOS 5.1

watchOS

Version

5.1

Build ID

16R591

File Size

746.86 MB

Release Date

2018-10-30T17:21:04Z

Update Type

Normal release

Delta update - requires 4.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (38mm) →

About This Update

watchOS 5.1 (build 16R591) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-10-30T17:21:04Z. The update package is 746.86 MB. This is a delta (partial) update that requires 4.2 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 17f1279047b14baca4f1ff38ee5f9e84b15b22eb.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallFCS/patches/091-90084/229CF672-D65D-11E8-85D0-E5F85076EC0A/com_apple_MobileAsset_SoftwareUpdate/17f1279047b14baca4f1ff38ee5f9e84b15b22eb.zip