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May 17, 2013

How do you enter DFU mode on an iPhone 4?

I experienced a problem updating my iPhone 4 using iTunes. I had the same problem in the past with a 3GS, and was able to correct it by entering DFU mode (which I remember because I thought it meant Don't Mess Up, or something along those lines). What I don't recall is how you do it. Anyone know how to enter DFU mode?

05/31/2015
To enter DFU mode in your iPhone, iPad and iPod touch, kindly follow the below steps one by one,
Step 1: Connect your iPhone with your Mac/Windows computer through the lighting cable.

Step 2: Launch iTunes, Turn off your iPhone by Tap and hold Top power button.

Step 3: Now you can enter in DFU mode, by pressing down Sleep/power button and home button together for 10 second.

Release only pressed power/sleep button, (Not for home button)

Sleep - Power button and Home button in iPhone - iPad - iPod touch
Sleep – Power button and Home button in iPhone – iPad – iPod touch
Step 4: Then continuously press home button until you will get message on your Mac/windows screen over iTunes.

Message: iTunes has detected an iPhone in recovery mode.

Step 5: Now you screen completely black signal that now your iPhone, iPad and iPod touch in DFU mode.
02/14/2015
Step 1. Hold your device, then click the green “Start” button;
Step 2. After clicking the “Start” button, press the “Power” and the “Home” at the same time immediately for exact 10 seconds. The program will count the time for you.
Step 3. When the 10 seconds passed, release the “Power” button right now, but keep pressing the “Home” for another 10 seconds.
Step 4. You’ll be informed that you’ve successfully entered the scanning mode of the device after another 10 seconds, and you can release the “Home” button then.
With FonePaw iPhone Data Recovery, you can solve this problem as soon as possible. Read more below:
http://fonepaw-iphone-data-recovery.en.softonic.com/
02/03/2015
You can connect your iPhone to the PC and then turn off your iPhone by holding down the button at the top of the phone. Hold the "HOME button" and the "POWER button" at the same time for 10 seconds, and then release the power button but keep holding HOME button. Soon, you can put your iPhone in DFU mode. Y

v
08/05/2014

Open iTunes on computer. Connect iPhone to computer with USB cable. Hold both Home and Power button, after exactly 10 seconds release the Power Button, keep holding the Home button until iTunes recognizes iPhone in Recovery Mode, usually about 20 seconds time. If the iPhone screen is black, blank this is DFU Mode. Click the Restore button of iTunes. DFU Mode can be difficult to enter sometimes, just keep trying. DFU Mode is a black, blank screen with iTunes saying Recovery Mode.

http://www.recovery-ipad.com/iphone-in-dfu-mode.html

S
08/31/2013

Now follow the steps in the window to begin entering the DFU mode.

  • Step 1. Hold your device, then click the green “Start” button;
  • Step 2. After clicking the “Start” button, press the “Power” and the “Home” at the same time immediately for exact 10 seconds. The program will count the time for you.
  • Step 3. When the 10 seconds passed, release the “Power” button right now, but keep pressing the “Home” for another 10 seconds.
  • Step 4. You’ll be informed that you’ve successfully entered the scanning mode of the device after another 10 seconds, and you can release the “Home” button then.
z
05/29/2013

Step 1: Turn off your iPod touch / iPhone completely and connect to PC / mac

Step 2: Hold down the Power button for 3 seconds

Step 3: Without releasing the power button, also hold the Home button for 10 seconds

Step 4: Without releasing the home button, release the power button and keep holding the Home button for 20 seconds.

05/25/2013
DFU Mode
http://theiphonewiki.com/wiki/DFU_Mode

"Entering DFU Mode (Official Instructions)
Plug your device into your computer.
Turn off the device.
Hold the Power button for 3 seconds
Hold the Home button without releasing the Power button for 10 seconds
Release the Power Button but keep holding the Home button
Keep holding the Home button until you are alerted by iTunes saying that it has detected a device in Recovery Mode
Make sure the device screen is blank and no logos are present"
T
05/20/2013

It's actually called Device Firmware Update. Here is a step by step guide. It should be the same on the iPhone 4 as other iPhones. 

http://thebigboss.org/guides-iphone-ipod-ipad/dfu-mode

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