watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S535

File Size

166.13 MB

Release Date

2019-01-22T18:14:03Z

Update Type

Normal release

Delta update - requires 5.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm, LTE) →

About This Update

watchOS 5.1.3 (build 16S535) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-01-22T18:14:03Z. The update package is 166.13 MB. This is a delta (partial) update that requires 5.1 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 b8f72a148d1c7de762be4e2f6672e7791b728590.zip.

Direct URL

http://updates-http.cdn-apple.com/2019WinterFCS/patches/041-17084/8E64D7DE-15F6-11E9-9376-47C54CC90A65/com_apple_MobileAsset_SoftwareUpdate/b8f72a148d1c7de762be4e2f6672e7791b728590.zip