watchOS 5.3.9

watchOS

Version

5.3.9

Build ID

16U693

File Size

473.74 MB

Release Date

2021-01-26T18:26:53Z

Update Type

Normal release

Delta update - requires 5.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm) →

About This Update

watchOS 5.3.9 (build 16U693) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2021-01-26T18:26:53Z. The update package is 473.74 MB. This is a delta (partial) update that requires 5.1 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 68039a68e9fca94d8085b91d0abcf18fc3cf9cf3.zip.

Direct URL

http://updates-http.cdn-apple.com/2020FallFCS/patches/001-54157/D41ECD48-A14C-43CD-808A-DD42CF23FC45/com_apple_MobileAsset_SoftwareUpdate/68039a68e9fca94d8085b91d0abcf18fc3cf9cf3.zip