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iPhone 4 (GSM)

iOS 4.3.5 (8L1) for iPhone 4 (GSM)

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

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Download (699 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 4 (GSM) in to your PC.
  3. Open iTunes, and navigate to your iPhone 4 (GSM).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone3,1_4.3.5_8L1_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 4 (GSM) to reboot.

macOS

  1. Plug your iPhone 4 (GSM) in to your Mac.
  2. Navigate to your iPhone 4 (GSM) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone3,1_4.3.5_8L1_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 4 (GSM) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 4 (GSM) 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 iPhone3,1_4.3.5_8L1_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 4 (GSM) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone3,1_4.3.5_8L1_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 7099307319c669356955e9aff11a3129d6b8d8b4. 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 iPhone3,1_4.3.5_8L1_Restore.ipsw
  3. The output of the command should match the following checksum: 7099307319c669356955e9aff11a3129d6b8d8b4. 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 iPhone3,1_4.3.5_8L1_Restore.ipsw
  3. The output of the command should match the following checksum: 7099307319c669356955e9aff11a3129d6b8d8b4. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 54040d08602e6a9894a4671393b0c335d51bdb55a3e28a336676c5facc592349
MD5sum 7219c43eea7362c7a402861f71b4496e
SHA1sum 7099307319c669356955e9aff11a3129d6b8d8b4
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 4.3.5 Software Update

Fixes a security vulnerability with certificate validation.

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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