watchOS 4.2

watchOS

Version

4.2

Build ID

15S5100a

File Size

74.61 MB

Release Date

2017-11-13T18:03:55Z

Update Type

Normal release

Delta update - requires 4.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 2 (42mm) →

About This Update

watchOS 4.2 (build 15S5100a) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2017-11-13T18:03:55Z. The update package is 74.61 MB. This is a delta (partial) update that requires 4.2 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 e50fef18f8a78b27387a501c29d55b0fd233f311.zip.

Direct URL

http://appldnld.apple.com/watchos4.2seed/091-47037-20171113-1B391FB6-C658-11E7-9AAD-B78F9D2103BC/com_apple_MobileAsset_SoftwareUpdate/e50fef18f8a78b27387a501c29d55b0fd233f311.zip