watchOS 4.1

watchOS

Version

4.1

Build ID

15R5823c

File Size

558.57 MB

Release Date

2017-09-27T16:59:27Z

Update Type

Normal release

Delta update - requires 3.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (42mm) →

About This Update

watchOS 4.1 (build 15R5823c) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2017-09-27T16:59:27Z. The update package is 558.57 MB. This is a delta (partial) update that requires 3.2 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 9bef571903acd3f8dcb1635c295e9c223c291e5b.zip.

Direct URL

http://appldnld.apple.com/watchos4.1seeds/091-29624-20170927-4ABC31D6-9FBD-11E7-990D-AF506B179ABE/com_apple_MobileAsset_SoftwareUpdate/9bef571903acd3f8dcb1635c295e9c223c291e5b.zip