iOS 11.3.1

iOS

Version

11.3.1

Build ID

15E302

File Size

736.98 MB

Release Date

2018-04-24T17:11:35Z

Update Type

Normal release

Delta update - requires 11.2.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for iPhone 7 (GSM) →

About This Update

iOS 11.3.1 (build 15E302) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2018-04-24T17:11:35Z. The update package is 736.98 MB. This is a delta (partial) update that requires 11.2.1 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 40e62e7ca3f5d35581adfe8383d9907603a23870.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/ios/091-78094-20180419-179B953E-4063-11E8-A587-2AE0FBE594B0/com_apple_MobileAsset_SoftwareUpdate/40e62e7ca3f5d35581adfe8383d9907603a23870.zip