watchOS 4.3

watchOS

Version

4.3

Build ID

15T5176c

File Size

655.71 MB

Release Date

2018-02-07T18:09:48Z

Update Type

Normal release

Delta update - requires 3.2.3 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (42mm) →

About This Update

watchOS 4.3 (build 15T5176c) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2018-02-07T18:09:48Z. The update package is 655.71 MB. This is a delta (partial) update that requires 3.2.3 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 14dd902d5afecef37e044f4d0dfb18f674b4e526.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-64168-20180205-7A18F196-07A3-11E8-803C-4858315CC82B/com_apple_MobileAsset_SoftwareUpdate/14dd902d5afecef37e044f4d0dfb18f674b4e526.zip