watchOS 5.1

watchOS

Version

5.1

Build ID

16R5577c

File Size

405.1 MB

Release Date

2018-10-09T17:12:16Z

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 16R5577c) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-10-09T17:12:16Z. The update package is 405.1 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 34eea7ce947395813125fab033047f4cea192f1c.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-12150/0B9E52B0-C8BE-11E8-95A8-E86D6D2878E5/com_apple_MobileAsset_SoftwareUpdate/34eea7ce947395813125fab033047f4cea192f1c.zip