watchOS 4.2.3

watchOS

Version

4.2.3

Build ID

15S6600b

File Size

104.54 MB

Release Date

2018-02-19T21:17:49Z

Update Type

Normal release

Delta update - requires 4.2 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 2018-02-19T21:17:49Z. The update package is 104.54 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 1ce88e9c45c97031d0ee743156fb3570145c0063.zip.

Direct URL

http://appldnld.apple.com/watchos4.2.3/091-69479-20180219-87DC4506-1312-11E8-828D-4194E0A71A1F/com_apple_MobileAsset_SoftwareUpdate/1ce88e9c45c97031d0ee743156fb3570145c0063.zip