watchOS 5.3

watchOS

Version

5.3

Build ID

16U5537b

File Size

453.42 MB

Release Date

2019-05-28T17:12:53Z

Update Type

Normal release

Delta update - requires 5.1.2 installed first.

Download OTA

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

About This Update

watchOS 5.3 (build 16U5537b) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2019-05-28T17:12:53Z. The update package is 453.42 MB. This is a delta (partial) update that requires 5.1.2 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 9e323abb7a7cee798b24d9ff0fb8bc0b105456d6.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-67343/F01A8878-7D77-11E9-B63F-B554ECE80A8D/com_apple_MobileAsset_SoftwareUpdate/9e323abb7a7cee798b24d9ff0fb8bc0b105456d6.zip