watchOS 4.3

watchOS

Version

4.3

Build ID

15T212

File Size

324.3 MB

Release Date

2018-03-29T17:08:56Z

Update Type

Normal release

Delta update - requires 4.2 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 2018-03-29T17:08:56Z. The update package is 324.3 MB. This is a delta (partial) update that requires 4.2 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 2639e81435cc050796b610b7b4d39730c41a97bc.zip.

Direct URL

http://appldnld.apple.com/watchos4.3/091-49068-201803029-5FE41632-2B95-11E8-836A-6E2E04115E15/com_apple_MobileAsset_SoftwareUpdate/2639e81435cc050796b610b7b4d39730c41a97bc.zip