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iPhone 4 (CDMA)

iOS 5.1.1 (9B206) for iPhone 4 (CDMA)

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

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Download (830 MB)

✗ This firmware is not signed. This means you cannot restore to it in iTunes. The instructions below are included for reference only.

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your iPhone 4 (CDMA) in to your PC.
  3. Open iTunes, and navigate to your iPhone 4 (CDMA).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone3,3_5.1.1_9B206_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 4 (CDMA) to reboot.

macOS

  1. Plug your iPhone 4 (CDMA) in to your Mac.
  2. Navigate to your iPhone 4 (CDMA) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone3,3_5.1.1_9B206_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 4 (CDMA) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 4 (CDMA) 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 iPhone3,3_5.1.1_9B206_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 4 (CDMA) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone3,3_5.1.1_9B206_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 70b736f826335ccefbc9941c3bb5d3b211236461. 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 iPhone3,3_5.1.1_9B206_Restore.ipsw
  3. The output of the command should match the following checksum: 70b736f826335ccefbc9941c3bb5d3b211236461. 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 iPhone3,3_5.1.1_9B206_Restore.ipsw
  3. The output of the command should match the following checksum: 70b736f826335ccefbc9941c3bb5d3b211236461. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 9858070c6e36dd013474223a38359d03f4cb60dfb0215c730ef1e0ed536f6404
MD5sum 730d2a2c760c3b8267258447ff19a064
SHA1sum 70b736f826335ccefbc9941c3bb5d3b211236461
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update contains improvements and bug fixes, including:

  • Improves reliability of using HDR option for photos taken using the Lock Screen shortcut
  • Addresses bugs that could prevent the new iPad from switching between 2G and 3G networks
  • Fixes bugs that affected AirPlay video playback in some circumstances
  • Improved reliability for syncing Safari bookmarks and Reading List
  • Fixes an issue where 'Unable to purchase' alert could be displayed after successful purchase

For information on the security content of this update, please visit this website:

http://support.apple.com/kb/HT1222

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