watchOS 5.3

watchOS

Version

5.3

Build ID

16U5569a

File Size

143.08 MB

Release Date

2019-07-16T17:15:05Z

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 (build 16U5569a) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-07-16T17:15:05Z. The update package is 143.08 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 e37238f852f8394906fab6a8a3402f78a5bd870a.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerSeed/patches/041-84235/7E7891E8-A4B8-11E9-92E3-5B6E4F8BE28D/com_apple_MobileAsset_SoftwareUpdate/e37238f852f8394906fab6a8a3402f78a5bd870a.zip