watchOS 4.3

watchOS

Version

4.3

Build ID

15T212

File Size

346 MB

Release Date

2018-03-29T17:08:27Z

Update Type

Normal release

Delta update - requires 4.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (38mm) →

About This Update

watchOS 4.3 (build 15T212) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-03-29T17:08:27Z. The update package is 346 MB. This is a delta (partial) update that requires 4.1 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 f2c52ffb7a36508fbdff56c1cd5e768ce14156b3.zip.

Direct URL

http://appldnld.apple.com/watchos4.3/091-49083-201803029-9D07D814-2B95-11E8-930D-B93304115E15/com_apple_MobileAsset_SoftwareUpdate/f2c52ffb7a36508fbdff56c1cd5e768ce14156b3.zip