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iPhone 4 (GSM)

iOS 4.0.2 (8A400) for iPhone 4 (GSM)

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

Your download should begin shortly. If it does not, you can download it directly here:

Download (607 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 (GSM) in to your PC.
  3. Open iTunes, and navigate to your iPhone 4 (GSM).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone3,1_4.0.2_8A400_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 4 (GSM) to reboot.

macOS

  1. Plug your iPhone 4 (GSM) in to your Mac.
  2. Navigate to your iPhone 4 (GSM) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone3,1_4.0.2_8A400_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 4 (GSM) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 4 (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 iPhone3,1_4.0.2_8A400_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 4 (GSM) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone3,1_4.0.2_8A400_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: ac1cfa93f123e72282671bad7b2210713a5d4a8b. 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 iPhone3,1_4.0.2_8A400_Restore.ipsw
  3. The output of the command should match the following checksum: ac1cfa93f123e72282671bad7b2210713a5d4a8b. 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 iPhone3,1_4.0.2_8A400_Restore.ipsw
  3. The output of the command should match the following checksum: ac1cfa93f123e72282671bad7b2210713a5d4a8b. If it doesn't, you may need to redownload the file.

Checksums

MD5sum 790b24fe7515084f457ce413618b2709
SHA1sum ac1cfa93f123e72282671bad7b2210713a5d4a8b
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 4.0.2 Software Update

Fixes security vulnerability associated with viewing malicious PDF files.

Products compatible with this software update:

• iPhone 3G

• iPhone 3GS

• iPhone 4

• iPod touch 2nd generation

• iPod touch 3rd generation (late 2009 models with 32GB or 64GB)

For feature descriptions and complete instructions, see the user guides for iPhone and iPod touch at:

http://support.apple.com/manuals/iphone

http://support.apple.com/manuals/ipodtouch

For more information about iPhone and iPod touch, go to:

http://www.apple.com/iphone

http://www.apple.com/ipodtouch

To troubleshoot your iPhone or iPod touch, or to view additional support information go to:

http://www.apple.com/support/iphone

http://www.apple.com/support/ipodtouch

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

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

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