watchOS 5.3.9

watchOS

Version

5.3.9

Build ID

16U693

File Size

470.21 MB

Release Date

2021-01-26T18:26:39Z

Update Type

Normal release

Delta update - requires 5.1.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm) →

About This Update

watchOS 5.3.9 (build 16U693) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2021-01-26T18:26:39Z. The update package is 470.21 MB. This is a delta (partial) update that requires 5.1.2 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 557aa14e2fcd20380e58daf527793d086463ca6b.zip.

Direct URL

http://updates-http.cdn-apple.com/2020FallFCS/patches/001-54268/3E553AD8-F3D7-4AF7-8A59-0AFFEEF63C9F/com_apple_MobileAsset_SoftwareUpdate/557aa14e2fcd20380e58daf527793d086463ca6b.zip