watchOS 5.3

watchOS

Version

5.3

Build ID

16U5558b

File Size

163.38 MB

Release Date

2019-06-24T17:25:08Z

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 3 (42mm, LTE) →

About This Update

watchOS 5.3 (build 16U5558b) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2019-06-24T17:25:08Z. The update package is 163.38 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 a255df7f7e5467ee291d848bb0c46c61ff007a53.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-73710/2F422B6A-939D-11E9-A5E4-B9802A446F1D/com_apple_MobileAsset_SoftwareUpdate/a255df7f7e5467ee291d848bb0c46c61ff007a53.zip