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iPhone 3G

iOS 4.0 (8A293) for iPhone 3G

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

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Download (306 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 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_4.0_8A293_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_4.0_8A293_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_4.0_8A293_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_4.0_8A293_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: ee1eba9281b902d7ff3f24d50f9aebff0df27f92. 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_4.0_8A293_Restore.ipsw
  3. The output of the command should match the following checksum: ee1eba9281b902d7ff3f24d50f9aebff0df27f92. 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_4.0_8A293_Restore.ipsw
  3. The output of the command should match the following checksum: ee1eba9281b902d7ff3f24d50f9aebff0df27f92. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 584bc9190a259a3bf61a0d82fd1b8f2b9e1d12e4cb991c6d5eab79b1a2dee0ef
MD5sum 851ba4b463ff6c7f0f07db3ac9a600d5
SHA1sum ee1eba9281b902d7ff3f24d50f9aebff0df27f92
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