watchOS 4.3

watchOS

Version

4.3

Build ID

15T5176c

File Size

343.76 MB

Release Date

2018-02-07T18:10:01Z

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 3 (38mm, LTE) →

About This Update

watchOS 4.3 (build 15T5176c) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-02-07T18:10:01Z. The update package is 343.76 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 9f73cbdcca24202579bae3c1473fae091f343b87.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-64189-20180205-9E5A808E-07A2-11E8-B55B-C63E315CC82B/com_apple_MobileAsset_SoftwareUpdate/9f73cbdcca24202579bae3c1473fae091f343b87.zip