iOS 11.2.1 (15C153) for iPhone 5s (GSM)

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iPhone 5s (GSM)

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

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This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore. The instructions below are included for reference only.

Windows

  1. Install the latest version of Apple Devices from the Microsoft Store.
  2. Plug your iPhone 5s (GSM) in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 5s (GSM).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone_4.0_64bit_11.2.1_15C153_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 5s (GSM) to reboot.

macOS

  1. Plug your iPhone 5s (GSM) in to your Mac.
  2. Navigate to your iPhone 5s (GSM) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone_4.0_64bit_11.2.1_15C153_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 5s (GSM) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 5s (GSM) in to your PC.
  3. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  4. To perform a full erase restore, type idevicerestore -e iPhone_4.0_64bit_11.2.1_15C153_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 5s (GSM) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone_4.0_64bit_11.2.1_15C153_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 85124b66bb039b0740d7c8b61257abf1c1d07319. If it doesn't, you may need to redownload the file.

macOS

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone_4.0_64bit_11.2.1_15C153_Restore.ipsw
  3. The output of the command should match the following checksum: 85124b66bb039b0740d7c8b61257abf1c1d07319. If it doesn't, you may need to redownload the file.

Linux

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone_4.0_64bit_11.2.1_15C153_Restore.ipsw
  3. The output of the command should match the following checksum: 85124b66bb039b0740d7c8b61257abf1c1d07319. If it doesn't, you may need to redownload the file.

Checksums

SHA256sumabe2df1486b1e3f1480d6ba1029771a48665d4454e788a0d6abb8cd580e164be
MD5sumabe2df1486b1e3f1480d6ba1029771a48665d4454e788a0d6abb8cd580e164be
SHA1sum85124b66bb039b0740d7c8b61257abf1c1d07319
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 11.2.1 fixes bugs including an issue that could disable remote access to shared users of the Home app.

For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222

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