watchOS 5.1

watchOS

Version

5.1

Build ID

16R5584a

File Size

747.96 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 747.96 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 8b97ec2f3095935625c52a0f8c03f578d089253c.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-13581/7BD8C8EC-CD7F-11E8-86D3-D7DC10223D3D/com_apple_MobileAsset_SoftwareUpdate/8b97ec2f3095935625c52a0f8c03f578d089253c.zip