watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S5523a

File Size

144.54 MB

Release Date

2018-12-10T18:09:53Z

Update Type

Normal release

Delta update - requires 5.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 2 (38mm) →

About This Update

watchOS 5.1.3 (build 16S5523a) is an official Apple over-the-air update for the Apple Watch Series 2 (38mm), released on 2018-12-10T18:09:53Z. The update package is 144.54 MB. This is a delta (partial) update that requires 5.1 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 25f884700529bab1eeb972cc0abbf10e2dee1906.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-21039/ABF09F34-F8DE-11E8-AFDC-95A66072090B/com_apple_MobileAsset_SoftwareUpdate/25f884700529bab1eeb972cc0abbf10e2dee1906.zip