watchOS 5.1

watchOS

Version

5.1

Build ID

16R5577c

File Size

732.27 MB

Release Date

2018-10-09T17:11:50Z

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 16R5577c) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-10-09T17:11:50Z. The update package is 732.27 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 f50515ecbb0d02ecae66b931d8d779f0d2b8a525.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-12196/C32152DE-C8BE-11E8-9EFF-4D836D2878E5/com_apple_MobileAsset_SoftwareUpdate/f50515ecbb0d02ecae66b931d8d779f0d2b8a525.zip