watchOS 4.2

watchOS

Version

4.2

Build ID

15S102

File Size

151.2 MB

Release Date

2017-12-05T18:02:15Z

Update Type

Normal release

Delta update - requires 4.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm) →

About This Update

watchOS 4.2 (build 15S102) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2017-12-05T18:02:15Z. The update package is 151.2 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 3a2ec4f810bc177709ebc612643d13c1c0e8f536.zip.

Direct URL

http://appldnld.apple.com/watchos4.2/091-40711-20171204-E5197EEE-D480-11E7-826D-ED372EDC3D3E/com_apple_MobileAsset_SoftwareUpdate/3a2ec4f810bc177709ebc612643d13c1c0e8f536.zip