iOS 11.3.1

iOS

Version

11.3.1

Build ID

15E302

File Size

1.31 GB

Release Date

2018-04-24T17:10:42Z

Update Type

Normal release

Delta update - requires 10.3.3 installed first.

Download OTA

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About This Update

iOS 11.3.1 (build 15E302) is an official Apple over-the-air update for the iPhone 6s, released on 2018-04-24T17:10:42Z. The update package is 1.31 GB. This is a delta (partial) update that requires 10.3.3 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 9cb30f637a3ef11bc96461f22621c51084f21b30.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/ios/091-78371-20180419-BAE982C6-40F6-11E8-98B3-4D07C4535ADC/com_apple_MobileAsset_SoftwareUpdate/9cb30f637a3ef11bc96461f22621c51084f21b30.zip