5 iPhone issues that can be fixed with DFU mode

iPhone is not “immune” to all problems. Most users experience at least a few issues with the iPhone during its lifetime. One of the most powerful tools to fix these problems is iOS’ Device Firmware Update (DFU) mode.

DFU mode is a unique iPhone state that you can use to reinstall all software and firmware lines on your device. It has the most profound possible recovery for iPhone and is even more effective than putting the device in Recovery mode.

Here are some iPhone issues you can fix with DFU mode.

What iPhone problems can DFU mode fix?

5 iPhone issues that can be fixed with DFU mode

  1. The device is not responding
  2. The boot loop leads to a failed boot
  3. Firmware is corrupt, broken
  4. Software update failed
  5. Hardware-related issues

Note before putting the iPhone in DFU mode

Create iPhone backups first

Do not use DFU mode on broken iPhones!

How to put iPhone in DFU mode

5 iPhone issues that can be fixed with DFU mode

  1. The device is not responding

You may think that your iPhone has been turned into a “brick” when it encountered firmware problems. Among other things, the firmware is responsible for telling the iPhone how to respond to the various buttons on the device.


For example, when you press the Sleep / Wake button, the firmware will start to boot iOS. If the iPhone does not turn on, then it is probably because the firmware is not responding correctly with that button.


  1. The boot loop leads to a failed boot

The boot loop is the term when the iPhone cannot pass the Apple logo during initialization. This happens if there is a problem with the operating software on the device.


It’s hard to try other troubleshooting suggestions if you can’t get past the boot screen, but you can still put your iPhone in DFU mode. This allows you to reinstall the software, overriding any errors that cause the boot loop.


  1. Firmware is corrupt, broken

A lot of people already know how to use Recovery mode on an iPhone to fix a corrupted software, but corrupt firmware is quite another problem. If a message appears saying the firmware on your iPhone is evil, the only option now is to fix it with DFU mode.


A firmware crash may affect all components of the iPhone. They can lead to everything from slow performance to mediocre WiFi connections. When you reinstall the firmware via DFU mode, it will fix all sorts of problems like this.


  1. Software update failed

There’s a reason why iPhones don’t start updating software when their batteries are low. If you lose the right to update halfway through, the operating software will end in a “limbo” situation. That usually means the iPhone won’t be able to complete the update, nor can it use the previous software.


When you use DFU mode to recover your device, it will overwrite incomplete software with a new code, updating your iPhone to the latest version of iOS in the process.

  1. Hardware-related issues

Firmware on iPhone tells the device how to work with different hardware components. As a result, the problems that seem to require concrete repair are the result of faulty firmware.


Some of these issues include:


Battery life is erratic

Button not responding

A blank screen is displayed in either white or black

The reaction on the touch screen is unpredictable

Note before putting the iPhone in DFU mode

If you encounter any significant issues with your iPhone, then most likely, you can fix them with DFU mode. When you restore your iPhone with this mode, it will reinstall software and firmware, as well as erase all content. The iPhone will work as well as the new one after it is completed.


That means there are some risks associated with DFU mode.


Create iPhone backups first

When you restore the iPhone using DFU mode, all content on the iPhone will be deleted. First, you need to make sure you have a recent backup, so you don’t lose any photos, videos, messages, apps, or other personal data.


You cannot backup the iPhone after putting it in DFU mode. See Quantrimang.com iPhone backup guide for more details on how to do it.


Do not use DFU mode on broken iPhones!

If the iPhone is physically damaged, restoring it to DFU mode may render the device completely unusable. It doesn’t matter if you drop your iPhone into the water, crack the screen or damage the headphone port if your device is broken, the article does not recommend using DFU mode.


The reason for this is because DFU mode requires the iPhone to reconnect to various hardware components. If that cannot be done due to damage, it cannot end the firmware recovery, and the iPhone will not be available.


How to put iPhone in DFU mode

The process of putting the iPhone into DFU mode depends on the iPhone model you have. You’ll know you’re right if the computer recognizes the device, but nothing shows up on the iPhone screen.


To get started, use an Apple-certified USB cable to connect your iPhone to the computer. When you finish the last step, if the iPhone screen is blank, it is already in DFU mode. You can follow the prompts on your computer to recover your device.


However, if you see the computer icon or iTunes on the iPhone screen, that means you have put it in Recovery mode. Reconnect your phone to the computer and repeat the instructions from step 1 again. Failure on the first try is common.


For details, please refer to the article: How to put iPhone / iPad in DFU mode to restore.


After restoring your iPhone using DFU mode, you will no longer have any software or firmware issues. If this doesn’t work, reset the device but don’t restore any data from the backup. If you do this and are still having problems, your iPhone needs concrete repair.


Visit genuine service centers to find out which parts need replacing. If your iPhone is still under warranty, you can get it repaired for free. If not, Quantrimang.com has a lot of articles showing you how to fix the iPhone yourself:

I hope you will overcome all the problems!

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