watchOS 5.3.9

watchOS

Version

5.3.9

Build ID

16U693

File Size

454.09 MB

Release Date

2021-01-26T18:26:46Z

Update Type

Normal release

Delta update - requires 5.1.3 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (40mm) →

About This Update

watchOS 5.3.9 (build 16U693) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2021-01-26T18:26:46Z. The update package is 454.09 MB. This is a delta (partial) update that requires 5.1.3 to already be installed on the device - it cannot be applied from scratch. This update is currently signed by Apple, so it can be applied directly from Settings › General › Software Update.

The OTA payload file is fa68b0b386f09de663588a9ac6f6c745ad2ad58b.zip.

Direct URL

http://updates-http.cdn-apple.com/2020FallFCS/patches/001-53983/21881F51-AAB8-4E2D-8D3F-5D23DE5160A5/com_apple_MobileAsset_SoftwareUpdate/fa68b0b386f09de663588a9ac6f6c745ad2ad58b.zip