watchOS 5.1

watchOS

Version

5.1

Build ID

16R5568d

File Size

166.68 MB

Release Date

2018-10-02T17:15:11Z

Update Type

Normal release

Delta update - requires 5.0.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (40mm) →

About This Update

watchOS 5.1 (build 16R5568d) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2018-10-02T17:15:11Z. The update package is 166.68 MB. This is a delta (partial) update that requires 5.0.1 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 362be95145ea26c1176e62cb3cd742860208d7cc.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-09570/7E8ED0C4-C274-11E8-B9B3-F7589E794BF2/com_apple_MobileAsset_SoftwareUpdate/362be95145ea26c1176e62cb3cd742860208d7cc.zip