watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S5535a

File Size

91.88 MB

Release Date

2019-01-07T18:16:59Z

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 (44mm, LTE) →

About This Update

watchOS 5.1.3 (build 16S5535a) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-01-07T18:16:59Z. The update package is 91.88 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 886a49f0a8d1d6be55eb84b8774784b85912225f.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-30062/F92F6E8E-1048-11E9-8714-2A923DF199C7/com_apple_MobileAsset_SoftwareUpdate/886a49f0a8d1d6be55eb84b8774784b85912225f.zip