watchOS 5.1

watchOS

Version

5.1

Build ID

16R5559d

File Size

581.76 MB

Release Date

2018-09-18T17:23:10Z

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 16R5559d) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-09-18T17:23:10Z. The update package is 581.76 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 0f50efdea76e0c6a7fa1be29b601cbf3a0181af0.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/091-96949/3AFAF5B6-B853-11E8-9991-1C576D2878E5/com_apple_MobileAsset_SoftwareUpdate/0f50efdea76e0c6a7fa1be29b601cbf3a0181af0.zip