watchOS 4.3

watchOS

Version

4.3

Build ID

15T212

File Size

685.93 MB

Release Date

2018-03-29T17:08:46Z

Update Type

Normal release

Delta update - requires 3.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (42mm) →

About This Update

watchOS 4.3 (build 15T212) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2018-03-29T17:08:46Z. The update package is 685.93 MB. This is a delta (partial) update that requires 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 fe8b218158369506f2561966fbc5b89c144ef53b.zip.

Direct URL

http://appldnld.apple.com/watchos4.3/091-44864-201803029-6947FFB4-2B94-11E8-9755-A92404115E15/com_apple_MobileAsset_SoftwareUpdate/fe8b218158369506f2561966fbc5b89c144ef53b.zip