watchOS 5.1

watchOS

Version

5.1

Build ID

16R5584a

File Size

748.08 MB

Release Date

2018-10-15T17:10:04Z

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 3 (38mm) →

About This Update

watchOS 5.1 (build 16R5584a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-10-15T17:10:04Z. The update package is 748.08 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 f9c26b88e6684004cb95ffb23b304233310f0943.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-13416/247288B8-CD7F-11E8-AAB8-B1B59A4421AD/com_apple_MobileAsset_SoftwareUpdate/f9c26b88e6684004cb95ffb23b304233310f0943.zip