watchOS 5.1

watchOS

Version

5.1

Build ID

16R5589c

File Size

732.15 MB

Release Date

2018-10-22T17:18:53Z

Update Type

Normal release

Delta update - requires 4.3.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (38mm) →

About This Update

watchOS 5.1 (build 16R5589c) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-10-22T17:18:53Z. The update package is 732.15 MB. This is a delta (partial) update that requires 4.3.1 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 b5e69082dbb9c953cfa6e1f48d640646b45885c0.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-16458/6B7E716E-D3BE-11E8-B37D-FE9755D8F596/com_apple_MobileAsset_SoftwareUpdate/b5e69082dbb9c953cfa6e1f48d640646b45885c0.zip