watchOS 5.3.9

watchOS

Version

5.3.9

Build ID

16U693

File Size

511.15 MB

Release Date

2021-01-26T18:27:00Z

Update Type

Normal release

Delta update - requires 5.0 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 2021-01-26T18:27:00Z. The update package is 511.15 MB. This is a delta (partial) update that requires 5.0 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 11bde51bf65b9f8984cf028be4fc52f1ad205ba4.zip.

Direct URL

http://updates-http.cdn-apple.com/2020FallFCS/patches/001-53909/5349A554-9AC3-47B5-B47F-3A1D4EE4F396/com_apple_MobileAsset_SoftwareUpdate/11bde51bf65b9f8984cf028be4fc52f1ad205ba4.zip