watchOS 5.3

watchOS

Version

5.3

Build ID

16U5558b

File Size

125.43 MB

Release Date

2019-06-24T17:25:40Z

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 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 2019-06-24T17:25:40Z. The update package is 125.43 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 e2eb9e2023b27e7140b2be784904c8141d68d513.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-73591/154D002C-939D-11E9-B11A-EC012C446F1D/com_apple_MobileAsset_SoftwareUpdate/e2eb9e2023b27e7140b2be784904c8141d68d513.zip