watchOS 5.3

watchOS

Version

5.3

Build ID

16U6569

File Size

120.75 MB

Release Date

2019-07-22T19:20:16Z

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 (40mm, LTE) →

About This Update

watchOS 5.3 (build 16U6569) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm, LTE), released on 2019-07-22T19:20:16Z. The update package is 120.75 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 no longer signed by Apple, meaning it can no longer be downloaded and applied on-device through Settings.

The OTA payload file is 6df4c7eb6d79eca65a91515884ac03a991a72b00.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerFCS/patches/041-58550/B8FED346-A75F-11E9-9EEB-9AF5D7465B95/com_apple_MobileAsset_SoftwareUpdate/6df4c7eb6d79eca65a91515884ac03a991a72b00.zip