watchOS 5.3

watchOS

Version

5.3

Build ID

16U5537b

File Size

149.87 MB

Release Date

2019-05-28T17:12:46Z

Update Type

Normal release

Delta update - requires 5.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm) →

About This Update

watchOS 5.3 (build 16U5537b) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2019-05-28T17:12:46Z. The update package is 149.87 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 51220302bcd2a840392e56e69ab5db16a93bea91.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-67418/D50FA5D2-7D76-11E9-8BCA-FD1A521DB9FD/com_apple_MobileAsset_SoftwareUpdate/51220302bcd2a840392e56e69ab5db16a93bea91.zip