watchOS 5.3

watchOS

Version

5.3

Build ID

16U5558b

File Size

169.33 MB

Release Date

2019-06-24T17:25:25Z

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) →

About This Update

watchOS 5.3 (build 16U5558b) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2019-06-24T17:25:25Z. The update package is 169.33 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 5d33aca915b59a60d5207487f5d491fa6822f602.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-73647/86176068-939D-11E9-8651-F2942A446F1D/com_apple_MobileAsset_SoftwareUpdate/5d33aca915b59a60d5207487f5d491fa6822f602.zip