watchOS 6.3

watchOS

Version

6.3

Build ID

17U216

File Size

170.72 MB

Release Date

2021-01-26T18:26:29Z

Update Type

Normal release

Delta update - requires 6.2.5 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm, LTE) →

About This Update

watchOS 6.3 (build 17U216) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2021-01-26T18:26:29Z. The update package is 170.72 MB. This is a delta (partial) update that requires 6.2.5 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 b88e77b39c0645d12a13dae1fb63764db1ec4581.zip.

Direct URL

http://updates-http.cdn-apple.com/2021WinterFCS/patches/001-88721/44B18714-417F-430E-89AC-0D1CF20FEE62/com_apple_MobileAsset_SoftwareUpdate/b88e77b39c0645d12a13dae1fb63764db1ec4581.zip