watchOS 4.3

watchOS

Version

4.3

Build ID

15T5165e

File Size

328.26 MB

Release Date

2018-01-25T18:04:28Z

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 (42mm) →

About This Update

watchOS 4.3 (build 15T5165e) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2018-01-25T18:04:28Z. The update package is 328.26 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 007b687a737ad2037950568f5fe208ffdf3e520c.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-63481-20180123-08987E84-FE2E-11E7-B2AE-C5F25209FAF2/com_apple_MobileAsset_SoftwareUpdate/007b687a737ad2037950568f5fe208ffdf3e520c.zip