watchOS 5.1

watchOS

Version

5.1

Build ID

16R5584a

File Size

90.8 MB

Release Date

2018-10-15T17:09:36Z

Update Type

Normal release

Delta update - requires 5.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (38mm) →

About This Update

watchOS 5.1 (build 16R5584a) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-10-15T17:09:36Z. The update package is 90.8 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 336569d4c7010c8c03c5ae537beb954ae59b7bc0.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-13685/64F33C30-CD7E-11E8-BB6C-EC771943CB82/com_apple_MobileAsset_SoftwareUpdate/336569d4c7010c8c03c5ae537beb954ae59b7bc0.zip