iOS 4.0.2 (8A400) for iPhone 3G[S]

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iPhone 3G[S]

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

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

Download (378 MiB)

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 3G[S] in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 3G[S].
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone2,1_4.0.2_8A400_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 3G[S] to reboot.

macOS

  1. Plug your iPhone 3G[S] in to your Mac.
  2. Navigate to your iPhone 3G[S] in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone2,1_4.0.2_8A400_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 3G[S] to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 3G[S] 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 iPhone2,1_4.0.2_8A400_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 3G[S] to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone2,1_4.0.2_8A400_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 61d21363ced6e006cc226f9a0a0e9c6ed8e048ab. 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 iPhone2,1_4.0.2_8A400_Restore.ipsw
  3. The output of the command should match the following checksum: 61d21363ced6e006cc226f9a0a0e9c6ed8e048ab. 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 iPhone2,1_4.0.2_8A400_Restore.ipsw
  3. The output of the command should match the following checksum: 61d21363ced6e006cc226f9a0a0e9c6ed8e048ab. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum96268657372f6209ec0ea3c629f493a4dfd7bc7ce10506af86bdad54b09dd06a
MD5sum96268657372f6209ec0ea3c629f493a4dfd7bc7ce10506af86bdad54b09dd06a
SHA1sum61d21363ced6e006cc226f9a0a0e9c6ed8e048ab
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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