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Your iPhone 8's Device Firmware Update (DFU) mode can be used to repair, upgrade, downgrade, or jailbreak iOS. If your iPhone 8 is in DFU mode, your iPhone's screen will be black as long as it's connected to your computer. To exit DFU mode, you'll need to press a series of buttons. This wikiHow article will teach you how to exit and enter DFU mode on an iPhone 8.

Method 1
Method 1 of 2:

Exiting DFU Mode

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  1. It's on the left side of your phone. [1]
  2. It's on the left side of your phone. [2]
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  3. You'll find this button on the right side of your phone. It's the button that puts your phone to sleep or wakes it up. [3]
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Method 2
Method 2 of 2:

Entering DFU Mode

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  1. You can use either a Mac (newer OS versions will use Finder instead of iTunes) or a Windows computer with iTunes. [4]
    • You can use the lightning-to-USB cable that your phone came shipped with.
  2. It's on the left side of your phone. [5]
  3. It's on the left side of your phone. [6]
  4. You'll find this button on the right side of your phone. It's the button that puts your phone to sleep or wakes it up. [7]
    • Once you press down on the side button, start counting to 10 as you will continue to the next step and add another button.
  5. After you've held the side button for 10 seconds, press and hold the "Volume Down" button as well. [8]
    • After you've pressed down the "Volume Down" button, start counting to five.
  6. You still have the "Volume Down" button pressed.
    • If the Apple logo appears, you held the side button down too long and will need to try again.
    • The screen of your iPhone will remain black and display nothing when it's in DFU mode. The only way to tell it's in DFU mode is that "Restore iPhone" is the only option available in iTunes.
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      About This Article

      Article Summary X

      1. Connect the iPhone to a computer to put it in DFU mode.
      2. Press and release the "Volume Up" and "Volume Down" buttons then press and hold the side button for 10 seconds.
      3. Press and hold the "Volume Down" button as well.
      4. Release the side button after 5 seconds and your phone should be in DFU mode.
      5. Press and release each of the "Volume Up" and "Volume Down" buttons, then press and hold the side button until you see the Apple logo to restart it out of DFU mode.

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