watchOS 4.1

watchOS

Version

4.1

Build ID

15R5843a

File Size

552.01 MB

Release Date

2017-10-16T17:05:49Z

Update Type

Normal release

Delta update - requires 3.2.3 installed first.

Download OTA

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

About This Update

watchOS 4.1 (build 15R5843a) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2017-10-16T17:05:49Z. The update package is 552.01 MB. This is a delta (partial) update that requires 3.2.3 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 999036980be813ce1bfe1be6ca7caea942b2b0b1.zip.

Direct URL

http://appldnld.apple.com/watchos4.1seeds/091-38756-20171016-45EA9240-AF8C-11E7-ABFF-D50EBDA7E146/com_apple_MobileAsset_SoftwareUpdate/999036980be813ce1bfe1be6ca7caea942b2b0b1.zip