watchOS 4.2

watchOS

Version

4.2

Build ID

15S102

File Size

585.3 MB

Release Date

2017-12-05T18:00:35Z

Update Type

Normal release

Delta update - requires 3.1 installed first.

Download OTA

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

About This Update

watchOS 4.2 (build 15S102) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2017-12-05T18:00:35Z. The update package is 585.3 MB. This is a delta (partial) update that requires 3.1 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 c9d7104704f8d39242deadd4450b7cbc8ea9981b.zip.

Direct URL

http://appldnld.apple.com/watchos4.2/091-19373-20171204-BCA9855E-D47F-11E7-A9ED-1D1F2EDC3D3E/com_apple_MobileAsset_SoftwareUpdate/c9d7104704f8d39242deadd4450b7cbc8ea9981b.zip