watchOS 4.3

watchOS

Version

4.3

Build ID

15T6212

File Size

62.3 MB

Release Date

2018-03-29T17:08:44Z

Update Type

Normal release

Delta update - requires 4.3 installed first.

Download OTA

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

About This Update

watchOS 4.3 (build 15T6212) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-03-29T17:08:44Z. The update package is 62.3 MB. This is a delta (partial) update that requires 4.3 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 5bf308b2cb71b7550ba7ee9257b9bf477e70e394.zip.

Direct URL

http://appldnld.apple.com/watchos4.3/091-74533-201803029-EB03FF4E-2B99-11E8-83BD-E75504115E15/com_apple_MobileAsset_SoftwareUpdate/5bf308b2cb71b7550ba7ee9257b9bf477e70e394.zip