watchOS 5.3

watchOS

Version

5.3

Build ID

16U5569a

File Size

170.87 MB

Release Date

2019-07-16T17:14:49Z

Update Type

Normal release

Delta update - requires 5.2 installed first.

Download OTA

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

About This Update

watchOS 5.3 (build 16U5569a) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2019-07-16T17:14:49Z. The update package is 170.87 MB. This is a delta (partial) update that requires 5.2 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 77415c66e5fd62aea19990b06cdf0aa95e70220a.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerSeed/patches/041-84367/F26589BC-A4B8-11E9-BEE4-C9894F8BE28D/com_apple_MobileAsset_SoftwareUpdate/77415c66e5fd62aea19990b06cdf0aa95e70220a.zip