watchOS 5.3.9

watchOS

Version

5.3.9

Build ID

16U693

File Size

112.82 MB

Release Date

2021-01-26T18:27:09Z

Update Type

Normal release

Delta update - requires 5.2.1 installed first.

Download OTA

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

About This Update

watchOS 5.3.9 (build 16U693) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2021-01-26T18:27:09Z. The update package is 112.82 MB. This is a delta (partial) update that requires 5.2.1 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 2ca1cbbc9e2b624e4db9408dfec2f4371b0c7e84.zip.

Direct URL

http://updates-http.cdn-apple.com/2020FallFCS/patches/001-54233/4F41A7D9-6FF5-4741-9CE7-C4669A1FAD01/com_apple_MobileAsset_SoftwareUpdate/2ca1cbbc9e2b624e4db9408dfec2f4371b0c7e84.zip