iOS 11.2.1

iOS

Version

11.2.1

Build ID

15C153

File Size

410.58 MB

Release Date

2017-12-13T18:11:04Z

Update Type

Normal release

Delta update - requires 11.1.1 installed first.

Download OTA

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

About This Update

iOS 11.2.1 (build 15C153) is an official Apple over-the-air update for the iPhone X (GSM), released on 2017-12-13T18:11:04Z. The update package is 410.58 MB. This is a delta (partial) update that requires 11.1.1 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 bcb53821b1c68c3e939004b8026b966a63267178.zip.

Direct URL

http://appldnld.apple.com/ios11.2.1/091-54684-20171213-0542DB0A-DE01-11E7-AC2F-E6ECFB2783B2/com_apple_MobileAsset_SoftwareUpdate/bcb53821b1c68c3e939004b8026b966a63267178.zip