watchOS 5.1

watchOS

Version

5.1

Build ID

16R5577c

File Size

782.49 MB

Release Date

2018-10-09T17:12:02Z

Update Type

Normal release

Delta update - requires 4.3 installed first.

Download OTA

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

About This Update

watchOS 5.1 (build 16R5577c) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-10-09T17:12:02Z. The update package is 782.49 MB. This is a delta (partial) update that requires 4.3 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 ac616bce1c48b2eca67c4dcf65a6a2304ff50180.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-12174/D50FA81A-C8BE-11E8-AC60-DB846D2878E5/com_apple_MobileAsset_SoftwareUpdate/ac616bce1c48b2eca67c4dcf65a6a2304ff50180.zip