watchOS 5.3.9

watchOS

Version

5.3.9

Build ID

16U693

File Size

151.15 MB

Release Date

2021-01-26T18:27:02Z

Update Type

Normal release

Delta update - requires 5.2 installed first.

Download OTA

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

About This Update

watchOS 5.3.9 (build 16U693) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm, LTE), released on 2021-01-26T18:27:02Z. The update package is 151.15 MB. This is a delta (partial) update that requires 5.2 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 14becea4ce991943af77e9796a8ca1c00cbf7427.zip.

Direct URL

http://updates-http.cdn-apple.com/2020FallFCS/patches/001-54295/1BE7AAF4-C63A-4C82-8905-E201FE63C5CA/com_apple_MobileAsset_SoftwareUpdate/14becea4ce991943af77e9796a8ca1c00cbf7427.zip