watchOS 6.3

watchOS

Version

6.3

Build ID

17U216

File Size

515.57 MB

Release Date

2021-01-26T18:26:22Z

Update Type

Normal release

Delta update - requires 6.1 installed first.

Download OTA

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

About This Update

watchOS 6.3 (build 17U216) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2021-01-26T18:26:22Z. The update package is 515.57 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 d129bc1c68d8a6ce7b42345dd07e5338af38e607.zip.

Direct URL

http://updates-http.cdn-apple.com/2021WinterFCS/patches/001-88804/026726B4-3EA8-4706-874A-7A1CB131C8D1/com_apple_MobileAsset_SoftwareUpdate/d129bc1c68d8a6ce7b42345dd07e5338af38e607.zip