watchOS 5.3

watchOS

Version

5.3

Build ID

16U5558b

File Size

475.98 MB

Release Date

2019-06-24T17:25:36Z

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, LTE) →

About This Update

watchOS 5.3 (build 16U5558b) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm, LTE), released on 2019-06-24T17:25:36Z. The update package is 475.98 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 1db55870a236425e61d67e8f9f8d4c8f6126400b.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-73722/B995FB3E-939D-11E9-9AA9-72A02A446F1D/com_apple_MobileAsset_SoftwareUpdate/1db55870a236425e61d67e8f9f8d4c8f6126400b.zip