iOS 11.3.1

iOS

Version

11.3.1

Build ID

15E302

File Size

1.34 GB

Release Date

2018-04-24T17:10:40Z

Update Type

Normal release

Delta update - requires 10.1.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for iPhone 6s →

Want full hardware specs? View iPhone 6s specs →

About This Update

iOS 11.3.1 (build 15E302) is an official Apple over-the-air update for the iPhone 6s, released on 2018-04-24T17:10:40Z. The update package is 1.34 GB. This is a delta (partial) update that requires 10.1.1 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 0ad465cdef3f636495f25725b0c3c69919d80fac.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/ios/091-78501-20180419-66F2F2FE-4107-11E8-A7FA-BB2AC4535ADC/com_apple_MobileAsset_SoftwareUpdate/0ad465cdef3f636495f25725b0c3c69919d80fac.zip