watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S5531a

File Size

1.32 GB

Release Date

2018-12-19T21:06:34Z

Update Type

Normal release

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (40mm) →

About This Update

watchOS 5.1.3 (build 16S5531a) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2018-12-19T21:06:34Z. The update package is 1.32 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 c0f641772ff95c77f3f6c143ea30ed27abcd7d14.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-26759/0E003AE0-0235-11E9-9F56-F5F24AE27AB7/com_apple_MobileAsset_SoftwareUpdate/c0f641772ff95c77f3f6c143ea30ed27abcd7d14.zip