watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S5523a

File Size

780.58 MB

Release Date

2018-12-10T18:10:13Z

Update Type

Normal release

Delta update - requires 4.3.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (38mm, LTE) →

About This Update

watchOS 5.1.3 (build 16S5523a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-12-10T18:10:13Z. The update package is 780.58 MB. This is a delta (partial) update that requires 4.3.2 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 946ea0b42c2fe9bd1b77740f95b599fed326f2b4.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-20601/F43B384E-F8DE-11E8-9526-EC7353940496/com_apple_MobileAsset_SoftwareUpdate/946ea0b42c2fe9bd1b77740f95b599fed326f2b4.zip