iOS 11.3.1

iOS

Version

11.3.1

Build ID

15E302

File Size

1.3 GB

Release Date

2018-04-24T17:10:02Z

Update Type

Normal release

Delta update - requires 10.1 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 5s (Global), released on 2018-04-24T17:10:02Z. The update package is 1.3 GB. This is a delta (partial) update that requires 10.1 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 11e87a08d489b3123ecaf844565b735700c55a1d.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/ios/091-78183-20180419-4D1C080C-40B7-11E8-803F-6DDCC3535ADC/com_apple_MobileAsset_SoftwareUpdate/11e87a08d489b3123ecaf844565b735700c55a1d.zip