watchOS 5.3.3

watchOS

Version

5.3.3

Build ID

16U620

File Size

51.78 MB

Release Date

2019-10-29T17:09:35Z

Update Type

Normal release

Delta update - requires 5.3.2 installed first.

Download OTA

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

About This Update

watchOS 5.3.3 (build 16U620) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2019-10-29T17:09:35Z. The update package is 51.78 MB. This is a delta (partial) update that requires 5.3.2 to already be installed on the device - it cannot be applied from scratch. This update is no longer signed by Apple, meaning it can no longer be downloaded and applied on-device through Settings.

The OTA payload file is 23a229c21f3fa2a548c527564f7362a8798357c4.zip.

Direct URL

http://updates-http.cdn-apple.com/2019FallFCS/patches/061-32253/2705EE96-F0D1-11E9-A362-4C5C81BF55A8/com_apple_MobileAsset_SoftwareUpdate/23a229c21f3fa2a548c527564f7362a8798357c4.zip