watchOS 4.2.3

watchOS

Version

4.2.3

Build ID

15S6600b

File Size

51.91 MB

Release Date

2018-02-19T21:17:51Z

Update Type

Normal release

Delta update - requires 4.2.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (38mm, LTE) →

About This Update

watchOS 4.2.3 (build 15S6600b) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-02-19T21:17:51Z. The update package is 51.91 MB. This is a delta (partial) update that requires 4.2.2 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 b81ac9f4da2c5ec9980589a5244ca5a8bc367442.zip.

Direct URL

http://appldnld.apple.com/watchos4.2.3/091-69365-20180219-E81F3E24-1311-11E8-BF33-D880E0A71A1F/com_apple_MobileAsset_SoftwareUpdate/b81ac9f4da2c5ec9980589a5244ca5a8bc367442.zip