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About DFU Mode on your iPhone

In recent times, iOs devices have reported a number of problems. One of the most recently reported problems is when the iPhone gets stuck in a restart loop. All you see when you try to use your iPhone is a black screen or the Apple logo would show up hold for a little while and then disappear. Even more problematic is the fact that this would happen over and again.

If you have encountered this problem, it is important to understand that it has happened to many more iOS device users. But even more importantly is that you can fix the problem very easily with a few simple steps. But before you can learn how to do this, it is vital to understand exactly what causes a problem like this one and what can be done.

It is not very clear what could be causing this problem although there are those who think it is caused by application updates. Most iPhone users have reported the problem immediately after application or firmware problems.

There is a however a solution to this problem. In order to get rid of this endless loop, you will need to do one of two things; use recovery mode or DFU mode. Most people agree that the best method is DFU mode. The reasons why most people would use DFU over recovery mode are numerous as we shall see shortly. But you need to first understand what DFU mode is.

Part 1: What is DFU mode?

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If you don't know what DFU mode is then you're in luck as we are going to delve into a deeper explanation of just what it is and how it can help you combat the problem described above. DFU or otherwise known as Device Firmware Update mode is basically a means by which you get your phone to interface with iTunes without iTunes automatically loading the latest iOs on to your phone.

This is the primary reason why most people prefer DFU mode over recovery mode. DFU mode gives you options you will not get with recovery mode. This is a distinct advantage especially when you suspect that firmware updates may be the cause for the problems you are experiencing.

DFU mode allows you to choose or change the firmware you are using. It is however very important to note that regardless of whether you use DFU mode or recovery mode you will lose all the modifications that you made to your phone. This means that all your un-synced data since your last iTunes backup will be lost. If you choose to either do DFU mode or recovery mode for your iPhone all the content that was not saved in your latest backup including voice memos, notes, contacts among others will be lost.  You are advised to proceed with caution.

Part 2: What can DFU mode do for you?

DFU mode can be quite handy when done correctly. As we have seen above, DFU can be used to fix a number of problems with your iPhone. It is especially very helpful when you want to fix a device that is stuck in a restart loop more so than recovery mode which can be used to fix the same problem but will come with limitations.

That is however not the only reason to choose DFU mode as your go-to solution. This is because with DFU mode you get to choose the firmware you want to install on your device. This is in sharp contrast with the recovery mode where iTunes would restore your phone to its original factory settings and install the latest firmware. Therefore you want to choose DFU mode over if you suspect that a firmware update had caused the original problem in the first place and you would rather not keep it.

It is an ideal choice if you want to revert back to a previous version of iOs.  If you have tried using recovery mode to no avail, DFU mode may come in handy. It is also ideal if you want to jailbreak your iPhone for those who want to skip the iBoot bootloader for their own jailbreaking purposes.

DFU mode also proves a handy solution for when you find that you need to unlock your SIM.

Part 3: Differences between DFU mode and recovery mode

We have mentioned both recovery mode and DFU mode and by now you can probably spot a few glaring differences between the two. Understanding the difference between the two will help you choose the right solution for whatever problem your device is exhibiting.  Choosing the right solution means you can easily fix your problem and get back to enjoying using your iPhone.

Here are a few of the most differences between DFU mode and recovery mode.

  1. Recovery mode makes use of iBoot during restoring or upgrading of your iPhone while DFU mode bypasses iBoot.
  2. Because DFU disregards iBoot, you can downgrade your firmware in DFU mode. You cannot downgrade firmware in recovery mode; recovery mode will install the latest version of iOS on your device.
  3. DFU mode allows your iPhone to interface with iTunes without a firmware upgrade. With Recover mode, iTunes will automatically upgrade your firmware to the latest version
  4. You can choose or change the firmware in DFU mode. You can only install the latest firmware in recovery mode
  5. DFU mode allows you to make use of custom firmware such as Cydia and other Jailbreak tools. Recovery mode is not so customizable and will only upgrade your firmware.

Given the major differences between the two, it is fairly clear why most people would choose DFU mode over recovery mode. DFU mode gives you more wiggle room to manoeuvre your iPhone and hence many more options to solving whatever problem you are facing.

It is however very important to note that both recovery and DFU modes will result in data loss. This means that both of them should not be attempted unless there is need to solve a particular problem or is absolutely necessary.

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