watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S535

File Size

86.32 MB

Release Date

2019-01-22T18:13:53Z

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 5.1.3 (build 16S535) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm, LTE), released on 2019-01-22T18:13:53Z. The update package is 86.32 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 9e11581f552c0fe3ea9b92b26aaf3c1ccb5f931c.zip.

Direct URL

http://updates-http.cdn-apple.com/2019WinterFCS/patches/041-27941/B0D6321C-15F7-11E9-95B5-67EC4CC90A65/com_apple_MobileAsset_SoftwareUpdate/9e11581f552c0fe3ea9b92b26aaf3c1ccb5f931c.zip