watchOS 6.3

watchOS

Version

6.3

Build ID

17U216

File Size

634.58 MB

Release Date

2021-01-26T18:26:26Z

Update Type

Normal release

Delta update - requires 6.0 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 2021-01-26T18:26:26Z. The update package is 634.58 MB. This is a delta (partial) update that requires 6.0 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 b64d6232d026654b13ce20987fb02e78325a88ea.zip.

Direct URL

http://updates-http.cdn-apple.com/2021WinterFCS/patches/001-88873/ABA06DFE-8E39-4DE3-8728-1979080E98F6/com_apple_MobileAsset_SoftwareUpdate/b64d6232d026654b13ce20987fb02e78325a88ea.zip