watchOS 5.1

watchOS

Version

5.1

Build ID

16R6591

File Size

112.65 MB

Release Date

2018-10-30T17:21:49Z

Update Type

Normal release

Delta update - requires 5.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (40mm) →

About This Update

watchOS 5.1 (build 16R6591) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2018-10-30T17:21:49Z. The update package is 112.65 MB. This is a delta (partial) update that requires 5.1 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 eaf0e018ee34c3fc9ee44e39833a16e417c5417c.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallFCS/patches/041-11156/7C53ACCA-D65C-11E8-BE55-A1B073605E50/com_apple_MobileAsset_SoftwareUpdate/eaf0e018ee34c3fc9ee44e39833a16e417c5417c.zip