watchOS 5.1

watchOS

Version

5.1

Build ID

16R591

File Size

733.45 MB

Release Date

2018-10-30T17:21:13Z

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 1 (42mm) →

About This Update

watchOS 5.1 (build 16R591) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2018-10-30T17:21:13Z. The update package is 733.45 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 b08faf5acad6f4f945c22fb07720a3dcfec51384.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallFCS/patches/091-92979/A1D16590-D65D-11E8-A21C-8888BC6EEC4E/com_apple_MobileAsset_SoftwareUpdate/b08faf5acad6f4f945c22fb07720a3dcfec51384.zip