During the lifetime of your iPhone, you may encounter particular situations where you will have to perform the deepest type of software restore available to users. This is known as putting your iPhone into DFU (Device Firmware Update) mode. Many other articles on the internet claim different methods of putting your phone into this mode, but the method in this article is confirmed by Apple Lead Geniuses. Not only will this article inform you of the process of putting your phone into DFU mode, it will also explain the technicalities of the process.
What to Know Before Proceeding
There is various terminology you should be familiar with before proceeding. With this said, the Home Button is the circular bottom towards the bottom of your display. The Sleep/Wake Button is the power button. It is usually on either the top or right-side of the phone, depending on the model of the phone. Also, it is highly recommended that you, before you continue with attempting to perform a DFU restore, backup your iPhone via iTunes or iCloud. The last thing to keep in mind before moving on is that, if you have difficulties counting in your head, you should obtain some sort of timer.
How to Put Your iPhone into Device Firmware Update Mode
Firstly, with either your iPhone powered on or off, plug your iPhone into your computer and boot up iTunes. Once it is plugged in, hold the Sleep/Wake Button and the Home Button (but, keep in mind that if you are using an iPhone 7 or 7-Plus you should press the volume down button instead) at the same time for approximately 8 seconds. After 8 seconds have passed, release the Sleep/Wake Button but keep holding the Home Button (or volume down button) until iTunes displays a text box stating “iTunes has detected an iPhone in recovery mode.” Once this box appears, release the Home Button (or volume down button). If your phone has been successfully booted into DFU mode, your phone’s screen should now be black. Now, to complete the restore, attempt to restore your iPhone using whatever backup you have access to through iTunes.
A Quick Warning
It must be stated that when you perform a DFU restore, your computer wipes and restores every single line of code that makes use of your hardware on software on your iPhone. With this in mind, there are plenty of ways that this could go wrong. In fact, if your phone has water-damaged, there is a good chance that the restore can break your phone completely.
Extra Info: What is Firmware and What Does It Do?
Firmware is essentially the code that controls the hardware associated with your device. Usually, the firmware does not change unless it is forced to, and that does not happen incredibly often. Essentially, you cannot open up your phone and switch its firmware around. Almost every modern device has some sort of firmware. For example, even your washing machine has some sort of firmware that allows for the use of buttons and basic electronic functions. Like a phone, you cannot open up your washing machine and switch its firmware because its firmware has been professionally set to the machine, and, without being an expert, it is very difficult to completely change a device’s firmware. The easiest way to explain this is that you cannot change what your washing machine defines as a color clothing wash. This is because it is completely set by the firmware of the machine and not the software.
Why Do a DFU Restore?
The answer to this question lies in the fact that Apple employees prefer DFU restores over normal resets and restores. This is because if there happens to be a true problem with an iPhone, a DFU restore has the greatest chance to fix whatever the issue may be. Some individuals may think this type of restore is going overboard, but if Apple employees prefer this method, there surely must be something to it. Hopefully, you will now be prepared to fix whatever issue your iPhone may have now that you are equipped with the knowledge of how to perform a DFU restore.
Wirefly Is America's Most Trusted Source For All Cell Phones, Plans, TV, and Internet Deals
Wirefly offers great deals on a large selection of smartphones, cell phones, tablets, mobile hotspots, and other wireless devices for the nation's most popular carriers. Use Wirefly’s innovative cell phone and plan comparison tools to ensure you are getting the best deal on the market. Shop with confidence knowing that Wirefly wants to help you find the best prices on cell phones, cell phone plans, TV, and Internet service.