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iPhone 3G[S]

iOS 4.1 (8B117) for iPhone 3G[S]

✓ 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 (401 MB)

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your iPhone 3G[S] in to your PC.
  3. Open iTunes, and navigate to your iPhone 3G[S].
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone2,1_4.1_8B117_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_4.1_8B117_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_4.1_8B117_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_4.1_8B117_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 2d1657cd33ae23b8d4e79e41fe758d09d3c52e30. 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_4.1_8B117_Restore.ipsw
  3. The output of the command should match the following checksum: 2d1657cd33ae23b8d4e79e41fe758d09d3c52e30. 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_4.1_8B117_Restore.ipsw
  3. The output of the command should match the following checksum: 2d1657cd33ae23b8d4e79e41fe758d09d3c52e30. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum fc43ff778a2f1d0d78e26d8d50dd183f2603102f882977bbda58aa99b7cb5726
MD5sum e07bee3c03e7a18e5d75fcaa23db17b5
SHA1sum 2d1657cd33ae23b8d4e79e41fe758d09d3c52e30
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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