watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S5531a

File Size

1.37 GB

Release Date

2018-12-19T21:06:42Z

Update Type

Normal release

Download OTA

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

About This Update

watchOS 5.1.3 (build 16S5531a) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2018-12-19T21:06:42Z. The update package is 1.37 GB. This is a full OTA update that can be applied from any compatible base version. 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 f3f4b592793574971d0b4eea51b6d7f49a0074c1.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-26859/0E030252-0235-11E9-B1F4-D58B8FD04030/com_apple_MobileAsset_SoftwareUpdate/f3f4b592793574971d0b4eea51b6d7f49a0074c1.zip