watchOS 5.1

watchOS

Version

5.1

Build ID

16R5589c

File Size

160.31 MB

Release Date

2018-10-22T17:19:57Z

Update Type

Normal release

Delta update - requires 5.0 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm) →

About This Update

watchOS 5.1 (build 16R5589c) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2018-10-22T17:19:57Z. The update package is 160.31 MB. This is a delta (partial) update that requires 5.0 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 ea9f7d77b13b2c143d936ad18936e368578019d0.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-16392/50D1C038-D3BD-11E8-8D1D-147A55D8F596/com_apple_MobileAsset_SoftwareUpdate/ea9f7d77b13b2c143d936ad18936e368578019d0.zip