watchOS 4.3

watchOS

Version

4.3

Build ID

15T5212a

File Size

306.68 MB

Release Date

2018-03-16T20:08:53Z

Update Type

Normal release

Delta update - requires 4.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch (38mm) →

About This Update

watchOS 4.3 (build 15T5212a) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-03-16T20:08:53Z. The update package is 306.68 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 6ed76059f2d2533bd4ccf0f586bed796869ac1b8.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-73438-20180316-49A7FA5A-27C1-11E8-B864-6C55C3BE6990/com_apple_MobileAsset_SoftwareUpdate/6ed76059f2d2533bd4ccf0f586bed796869ac1b8.zip