watchOS 5.1

watchOS

Version

5.1

Build ID

16R5577c

File Size

431.63 MB

Release Date

2018-10-09T17:12:06Z

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, LTE) →

About This Update

watchOS 5.1 (build 16R5577c) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-10-09T17:12:06Z. The update package is 431.63 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 bfd4cf7c8c29151992f739b142312ed90aeabd1f.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-12121/F4E27DDA-C8BD-11E8-8436-7B6A6D2878E5/com_apple_MobileAsset_SoftwareUpdate/bfd4cf7c8c29151992f739b142312ed90aeabd1f.zip