iOS 11.2.1

iOS

Version

11.2.1

Build ID

15C153

File Size

1.25 GB

Release Date

2017-12-13T18:13:50Z

Update Type

Normal release

Delta update - requires 10.1 installed first.

Download OTA

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About This Update

iOS 11.2.1 (build 15C153) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-12-13T18:13:50Z. The update package is 1.25 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 286b40270e88b5379e9b87966399890356295777.zip.

Direct URL

http://appldnld.apple.com/ios11.2.1/091-55096-20171213-FBAB56E6-DE17-11E7-A1E8-551C96F5E937/com_apple_MobileAsset_SoftwareUpdate/286b40270e88b5379e9b87966399890356295777.zip