watchOS 4.2

watchOS

Version

4.2

Build ID

15S5100a

File Size

145.33 MB

Release Date

2017-11-13T18:04:23Z

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 4.2 (build 15S5100a) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2017-11-13T18:04:23Z. The update package is 145.33 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 698bdc86579fb7368d9c7385cb40225fca09cea9.zip.

Direct URL

http://appldnld.apple.com/watchos4.2seed/091-47015-20171113-0EB68652-C658-11E7-9D21-4C8B9D2103BC/com_apple_MobileAsset_SoftwareUpdate/698bdc86579fb7368d9c7385cb40225fca09cea9.zip