watchOS 5.1

watchOS

Version

5.1

Build ID

16R5584a

File Size

405.26 MB

Release Date

2018-10-15T17:10:08Z

Update Type

Normal release

Delta update - requires 5.0 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 2018-10-15T17:10:08Z. The update package is 405.26 MB. This is a delta (partial) update that requires 5.0 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 a53c9a50124c022f55f0f38977242bedfc7ba3c4.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-13671/B43E46E0-CD7E-11E8-8FC0-CA0EBCECC405/com_apple_MobileAsset_SoftwareUpdate/a53c9a50124c022f55f0f38977242bedfc7ba3c4.zip