How to Put iPhone in DFU Mode

Flash mode is a mobile phone software program used by software developers to make changes in the cell phone. In Apple iPhone, this flash mode is known as DFU mode. If you are thinking how to put iPhone in DFU mode, then the following tutorial will prove to be a useful read. But before that, let us understand what is DFU mode.

DFU Mode Information
Flash mode is an environment of the mobile phone where it does not have any operating system (OS). The cell phone works like a plain Java phone or similar to a terminal. In such a phone, one can carry out different programming tasks that are supported by the cell phone. One can downgrade or upgrade the firmware and carry out other tasks too. This flash mode is called the Device Firmware Update (DFU) mode in Apple terminology.

Uses of DFU Mode in iPhone
DFU mode is a specialized flash mode for iPhone, similar to other flash mode in mobile phones. If one is trying to restore iPhone firmware or downgrade the firmware, one needs to put iPhone in DFU mode. Also, if the iPhone freezes or one needs to restore and save valuable data on the iPhone, DFU mode is the last resort.

How to Enter iPhone in DFU Mode
Many times one may face error (1) or error (6) when trying to downgrade firmware in iPhone. If you too face a similar problem, then you need to know how to put iPhone in DFU mode. It is very easy to enter iPhone in DFU mode. Let us see how in the following tutorials:

Step 1
Connect iPhone to your Computer. Turn off your iPhone. Open Apple iTunes in your computer.

Step 2
You need to hold the Power and Home button simultaneously for about 10 seconds and allow your phone to boot.

Step 3
If you observe the Apple logo appearing on the phone's display it means you have not put your phone in DFU mode. You need to press the buttons again simultaneously for 10 seconds. Release the Power button, but continue holding the Home button.

Step 4
Hold the Home button till you observe a pop up appear in the iTunes window on your computer. This pop up will say 'iPhone detected in Recovery Mode'. You need to press OK to continue.

Once your phone is in DFU mode, you will observe a black screen on the iPhone display. You may even notice a small icon that looks like a USB cable that points towards a hard drive. This feature depends whether or not your phone is jailbroken or not.

How to Put iPhone in DFU Mode without Power Buttons
It is seen while trying to enter DFU modes using buttons, either of the buttons may break, if pressed too hard. To avoid such a case, one needs to know how to put iPhone in DFU mode without buttons. The following tutorials will discuss how to put iPhone in DFU mode without buttons in simple steps:

Step 1
You need to first download DFU.zip from the Internet, for entering the iPhone in DFU mode without buttons.

Step 2
After downloading, you need to extract the archive to the root folder in the hard drive of the computer, that is, C:/DFU/.

Step 3
Connect the iPhone with your computer. Do not enter iTunes, simply ignore it.

Step 4
You need to go to Start, on your computer, and type in "c:/dfu/dfu iBSS.m68ap.RELEASE.dfu" in Run.

Step 5
Once you type the above words in Run in your Start program, you need to wait for a 'white screen' to appear on your iPhone.

Step 6
Once this is seen, you can carry out downgrading your firmware.

This was all about how to put iPhone in DFU mode, as well as some information related to how to put iPhone in DFU mode without power buttons. If you have any confusion, it is better to visit an expert who will help you learn how to enter iPhone in DFU mode. You can try the above tutorial at your own risk, only if you are confident of carrying out the process successfully.