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iPhone 3G

iOS 4.1 (8B117) for iPhone 3G

✓ This firmware is signed. This means that you can restore to it in iTunes.

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

Download (323 MB)

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your iPhone 3G in to your PC.
  3. Open iTunes, and navigate to your iPhone 3G.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone1,2_4.1_8B117_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_4.1_8B117_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_4.1_8B117_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_4.1_8B117_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: d87bab469dd1146ab83ddcc23f03b3164d7e09d4. 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_4.1_8B117_Restore.ipsw
  3. The output of the command should match the following checksum: d87bab469dd1146ab83ddcc23f03b3164d7e09d4. 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_4.1_8B117_Restore.ipsw
  3. The output of the command should match the following checksum: d87bab469dd1146ab83ddcc23f03b3164d7e09d4. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum c3b82ba016c633bfe3b52b6758e3c208135c32bbd33c54790c84d37d21dee3e9
MD5sum 8cc589baad3c80dd8324c37d7dc00750
SHA1sum d87bab469dd1146ab83ddcc23f03b3164d7e09d4
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 4.1 Software Update

This update contains improvements, including the following:

• Game Center

    - Send and receive friend requests

    - Invite friends to multi-player games over the Internet

    - Play multi-player games by auto-matching with other

          players

    - View Leaderboards and Achievements

    - Discover new games from friends

• High dynamic range (HDR) photos on iPhone 4

• Support for TV show rentals on iTunes

• Ability to upload HD videos to YouTube and MobileMe

      over Wi-Fi on iPhone 4

• Additional support for AVRCP-supported accessories,

      including next & previous track control

• FaceTime calling directly from Favorites

• Bug fixes, including:

    - iPhone 4 proximity sensor performance

    - iPhone 3G performance

    - Nike+iPod fixes

    - Bluetooth improvements

Products compatible with this software update:

• iPhone 4

• iPhone 3GS

• iPhone 3G

• iPod touch 2nd generation, or later

Game Center requires iPhone 4, iPhone 3GS, iPod touch 2nd generation or later.

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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