iOS 11.2.1 (15C153)

IPSW Firmware Unsigned
Product
Device
Version
4
Download
Official IPSW Download

Download iOS 11.2.1

Download OTA Update

This firmware is provided as a direct link to Apple's official servers. No mirroring or modification is performed.

Firmware Information

Version

iOS 11.2.1

Build ID

15C153

Release Date

December 13, 2017

File Size

2.35 GB

File Name

MD5 Sum

9da0bf01341414a6c4087de38144967c

SHA1 Sum

cb2ff059e91f2d10ae203580316d3b77a7551473

About this Device

Identifier

iPad6,4

See all firmwares

Need help?

Our community guide has everything you need to know about restoring firmwares.

Read Guide

How to Install?

Follow these critical steps to ensure a successful firmware installation.

1

Secure Your Data

Always start by creating a full backup of your device via iCloud or a computer to ensure your personal files are safe.

2

Establish Connection

Use a high-quality MFi-certified cable to connect your device to your Mac or PC.

3

Verify Security

Temporarily disable Find My in your iCloud settings to allow the restoration process to proceed.

4

Initiate Restore

Hold Option (Mac) or Shift (PC) while clicking Restore in Finder/iTunes, then select your downloaded IPSW.

5

Finalize Setup

Once the installation completes, follow the on-screen prompts to restore your data from your backup.