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iPhone 2G

iPhoneOS 3.1.2 (7D11) for iPhone 2G

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

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Download (253 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 2G in to your PC.
  3. Open iTunes, and navigate to your iPhone 2G.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone1,1_3.1.2_7D11_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 2G to reboot.

macOS

  1. Plug your iPhone 2G in to your Mac.
  2. Navigate to your iPhone 2G in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone1,1_3.1.2_7D11_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 2G to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 2G 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 iPhone1,1_3.1.2_7D11_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 2G to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone1,1_3.1.2_7D11_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: e4a1171542dbbd3093516d9c02047b9f7e143050. 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 iPhone1,1_3.1.2_7D11_Restore.ipsw
  3. The output of the command should match the following checksum: e4a1171542dbbd3093516d9c02047b9f7e143050. 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 iPhone1,1_3.1.2_7D11_Restore.ipsw
  3. The output of the command should match the following checksum: e4a1171542dbbd3093516d9c02047b9f7e143050. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum e06c8744d942ced2bbdc6668fe3818f53aa1e06080f02c50250c5af0c392b8d0
MD5sum 91f35196a726ff32b9d83c54bf3b8f23
SHA1sum e4a1171542dbbd3093516d9c02047b9f7e143050
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iPhone OS 3.1.2 Software Update

This update contains bug fixes and improvements, including the following:

• Resolves sporadic issue that may cause iPhone to not

      wake from sleep

• Resolves intermittent issue that may interrupt cellular

      network services until restart

• Fixes bug that could cause occasional crash during

      video streaming

Products compatible with this software update:

• iPhone

• iPhone 3G

• iPhone 3GS

For feature descriptions and complete instructions, see the user guide for your iPhone at:

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

For more information about iPhone, go to:

http://www.apple.com/iphone

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

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

This update contains security content originally included in previous iPhone Software Updates. For more information, please visit this website:

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

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