iPhoneOS 3.1 (7C144) for iPhone 3G

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iPhone 3G

✗ 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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Download (242 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 in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 3G.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone1,2_3.1_7C144_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 3G to reboot.

macOS

  1. Plug your iPhone 3G in to your Mac.
  2. Navigate to your iPhone 3G in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone1,2_3.1_7C144_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 3G to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 3G 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 iPhone1,2_3.1_7C144_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 3G to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone1,2_3.1_7C144_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 9b3b3c148170b012012278efda9ff5c38282d559. 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 iPhone1,2_3.1_7C144_Restore.ipsw
  3. The output of the command should match the following checksum: 9b3b3c148170b012012278efda9ff5c38282d559. 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 iPhone1,2_3.1_7C144_Restore.ipsw
  3. The output of the command should match the following checksum: 9b3b3c148170b012012278efda9ff5c38282d559. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum2d063a6d34c0c5d694ad834f77281a0fcfa42a2e3d9979c619243583082549bb
MD5sum2d063a6d34c0c5d694ad834f77281a0fcfa42a2e3d9979c619243583082549bb
SHA1sum9b3b3c148170b012012278efda9ff5c38282d559
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 Software Update

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

• Genius recommendations for Applications

• iTunes 9 support

  - Genius Mixes

  - Organize your apps directly in iTunes

  - Improved syncing options for music, movies, TV

          shows, podcasts and photos

  - iTunes U content organization

• Redeem iTunes Gift cards, codes and certificates in the

      App Store

• Display available iTunes account credits in the App Store

      and iTunes Store

• Browse and download ringtones wirelessly from the

      iTunes Store*

• Save video from Mail and MMS into Camera Roll

• Option to "Save as new clip" when trimming a video on

      iPhone 3GS

• Better iPhone 3G Wi-Fi performance when Bluetooth is

      turned on

• Remotely lock iPhone with a passcode via MobileMe

• Use Voice Control on iPhone 3GS with Bluetooth

      headsets

• Paste phone numbers into the Keypad

• Option to use Home button to turn on Accessibility

      features on iPhone 3GS

• Warn when visiting fraudulent websites in Safari (anti-

      phishing)

• Improved Exchange calendar syncing and invitation

      handling

• Fixes issue that caused some app icons to display

      incorrectly

Products compatible with this software update:

• iPhone

• iPhone 3G

• iPhone 3GS

* Not available in all regions.

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

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

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

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