watchOS 6.3

watchOS

Version

6.3

Build ID

17U216

File Size

436.79 MB

Release Date

2021-01-26T18:27:21Z

Update Type

Normal release

Delta update - requires 6.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 5 (44mm) →

About This Update

watchOS 6.3 (build 17U216) is an official Apple over-the-air update for the Apple Watch Series 5 (44mm), released on 2021-01-26T18:27:21Z. The update package is 436.79 MB. This is a delta (partial) update that requires 6.1 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 a8fabacd01c58afc3823f2d58cc5cca67d62998e.zip.

Direct URL

http://updates-http.cdn-apple.com/2021WinterFCS/patches/001-88610/0C7A87FF-1A67-44F1-B3D2-2A28FA6BADB8/com_apple_MobileAsset_SoftwareUpdate/a8fabacd01c58afc3823f2d58cc5cca67d62998e.zip