watchOS 6.3

watchOS

Version

6.3

Build ID

17U216

File Size

446 MB

Release Date

2021-01-26T18:27:29Z

Update Type

Normal release

Delta update - requires 6.1.2 installed first.

Download OTA

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

About This Update

watchOS 6.3 (build 17U216) is an official Apple over-the-air update for the Apple Watch Series 5 (44mm, LTE), released on 2021-01-26T18:27:29Z. The update package is 446 MB. This is a delta (partial) update that requires 6.1.2 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 98595e26a88deb34e752d46deef2a92578f072de.zip.

Direct URL

http://updates-http.cdn-apple.com/2021WinterFCS/patches/001-88808/01F0403D-F75D-4F4D-9C28-A63C37617FAD/com_apple_MobileAsset_SoftwareUpdate/98595e26a88deb34e752d46deef2a92578f072de.zip