watchOS 5.1

watchOS

Version

5.1

Build ID

16R5589c

File Size

52.64 MB

Release Date

2018-10-22T17:20:06Z

Update Type

Normal release

Delta update - requires 5.1 installed first.

Download OTA

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

About This Update

watchOS 5.1 (build 16R5589c) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2018-10-22T17:20:06Z. The update package is 52.64 MB. This is a delta (partial) update that requires 5.1 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 676cfc3bb9e50d0742170fe61fd3aa63121fd80b.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-16316/113F7D5C-D3BD-11E8-9205-0F6F55D8F596/com_apple_MobileAsset_SoftwareUpdate/676cfc3bb9e50d0742170fe61fd3aa63121fd80b.zip