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iPhone 3G[S]

iOS 4.3.4 (8K2) for iPhone 3G[S]

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

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

Download (441 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 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_4.3.4_8K2_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_4.3.4_8K2_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_4.3.4_8K2_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_4.3.4_8K2_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: be06903d55dc13d8948ae4cfa619a277df4d4e5b. 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_4.3.4_8K2_Restore.ipsw
  3. The output of the command should match the following checksum: be06903d55dc13d8948ae4cfa619a277df4d4e5b. 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_4.3.4_8K2_Restore.ipsw
  3. The output of the command should match the following checksum: be06903d55dc13d8948ae4cfa619a277df4d4e5b. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum f516f1b5ac2111ca8b81ffa6e9b3867d74cf28c84100a2cf3baea0842a31b1cb
MD5sum a172829312329d3bda87d23abf5ec4d4
SHA1sum be06903d55dc13d8948ae4cfa619a277df4d4e5b
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 4.3.4 Software Update

Fixes security vulnerability associated with viewing malicious PDF files.

Products compatible with this software update:

• iPhone 4 (GSM model)

• iPhone 3GS

• iPad 2

• iPad

• iPod touch (4th generation)

• iPod touch (3rd generation)

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

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

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