watchOS 5.1

watchOS

Version

5.1

Build ID

16R591

File Size

777.93 MB

Release Date

2018-10-30T17:21:19Z

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 3 (38mm, LTE) →

About This Update

watchOS 5.1 (build 16R591) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-10-30T17:21:19Z. The update package is 777.93 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 fe3775cea34564b9e7bffd5bbbead2cd89e3b072.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallFCS/patches/091-90169/751EC484-D65D-11E8-B2BE-C57C30BD7765/com_apple_MobileAsset_SoftwareUpdate/fe3775cea34564b9e7bffd5bbbead2cd89e3b072.zip