IPSW Downloads

iOS 11.2.1 - 15C153 for iPhone 6s

This firmware is not signed. This means you cannot restore to it in iTunes.

Release Date13 December 2017
Upload Date10 December 2017
File NameiPhone_4.7_11.2.1_15C153_Restore.ipsw
File Size2.47 GB
SHA256suma50333cdc2199845c9e4ccc080bc68c0f30a5b22cc87ff30765d2594781e7cb7
MD5sumd2ad5a1613a62b5170615d97d3de29b2
SHA1sum202b14e1e0f2cdbffc9a08c3aff9a75a4d9c1eee
IdentifieriPhone8,1

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 6s to your PC.
  3. Open iTunes and navigate to your iPhone 6s.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone_4.7_11.2.1_15C153_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 6s to reboot.

macOS

  1. Connect your iPhone 6s to your Mac.
  2. Navigate to your iPhone 6s in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone_4.7_11.2.1_15C153_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 6s to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 6s to your PC.
  3. Open a terminal and navigate to the IPSW file you downloaded, e.g., cd ~/Downloads.
  4. To perform a full erase restore, type idevicerestore -e iPhone_4.7_11.2.1_15C153_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 6s to reboot.