watchOS 4.3

watchOS

Version

4.3

Build ID

15T5165e

File Size

303.66 MB

Release Date

2018-01-25T18:04:22Z

Update Type

Normal release

Delta update - requires 4.2.2 installed first.

Download OTA

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

About This Update

watchOS 4.3 (build 15T5165e) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-01-25T18:04:22Z. The update package is 303.66 MB. This is a delta (partial) update that requires 4.2.2 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 b3bec6fbd2902febfc3313b32d531e58d5293285.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-63594-20180123-D0A013F6-FE2E-11E7-BBBD-31095309FAF2/com_apple_MobileAsset_SoftwareUpdate/b3bec6fbd2902febfc3313b32d531e58d5293285.zip