watchOS 5.3

watchOS

Version

5.3

Build ID

16U5526f

File Size

145.85 MB

Release Date

2019-05-15T17:12:53Z

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, LTE) →

About This Update

watchOS 5.3 (build 16U5526f) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm, LTE), released on 2019-05-15T17:12:53Z. The update package is 145.85 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 12f3abee9f1e1fab3b393881df9c0357ee682d33.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-62948/16585340-758E-11E9-9FAA-E1AB7193AD45/com_apple_MobileAsset_SoftwareUpdate/12f3abee9f1e1fab3b393881df9c0357ee682d33.zip