watchOS 5.1

watchOS

Version

5.1

Build ID

16R6591

File Size

408.75 MB

Release Date

2018-10-30T17:21:38Z

Update Type

Normal release

Delta update - requires 5.0 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (38mm) →

About This Update

watchOS 5.1 (build 16R6591) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-10-30T17:21:38Z. The update package is 408.75 MB. This is a delta (partial) update that requires 5.0 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 138a38586519238e90f6d19168a61f50f59c2b23.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallFCS/patches/041-00556/ECE28C28-D65B-11E8-934A-C803C716599A/com_apple_MobileAsset_SoftwareUpdate/138a38586519238e90f6d19168a61f50f59c2b23.zip