watchOS 4.2

watchOS

Version

4.2

Build ID

15S102

File Size

571.35 MB

Release Date

2017-12-05T18:01:51Z

Update Type

Normal release

Delta update - requires 3.2.2 installed first.

Download OTA

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

About This Update

watchOS 4.2 (build 15S102) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2017-12-05T18:01:51Z. The update package is 571.35 MB. This is a delta (partial) update that requires 3.2.2 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 bd733442534b28dbe1e79011582d19f71f71619e.zip.

Direct URL

http://appldnld.apple.com/watchos4.2/091-19346-20171204-56CAA604-D480-11E7-9578-63262EDC3D3E/com_apple_MobileAsset_SoftwareUpdate/bd733442534b28dbe1e79011582d19f71f71619e.zip