In a certain aspect, they are very similar and people may get confused in the concepts. Now I want to talk about the DFU Mode and Recovery Mode in a more comprehensive way.
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DFU Mode and Recovery Mode are known as a failsafe to reflash iPhone, iPad or iPod touch for
users. Actually, the two modes can do much more than that. We need to complete the operation
like update iOS with the DFU Mode or Recovery Mode. In a certain aspect, they are very similar
and people may get confused in the concepts. Now I want to talk about the DFU Mode and
Recovery Mode in a more comprehensive way.
Part 1: What Are DFU Mode and Recovery Mode Used for?
Users always enter Recovery mode to upgrade iOS or solve the system problems. With Recovery
mode, You can fix some system problems including:
1. iOS device get stuck in white Apple logo screen or black/blue screen and can not enter the
2. iOS device get restart again and again.
DFU mode is a state that you can make changes to the iOS system without booting your iPhone,
iPad or iPod touch. With DFU mode, you can fix the system problems of your device that could
not be solved with Recovery mode. It is more comprehensive when compared with Recovery
Besides, you can enter DFU mode to upgrade or downgrade your device. Often, we would
upgrade our iOS for more functions or better use. But sometimes we would want to downgrade it
because with the new version, the system or the software on our device could not fit it well.
Note: If you want to downgrade your device, you need to use DFU mode but not Recovery
mode. The reason would be shown in the second part, please continue to read.
What's more, some users would use DFU mode to make iPhone jailbroken or SIM unlock.
Part 2: Differences Between DFU Mode and Recovery Mode
While both DFU mode and Recovery mode can solve some system problems, you may ask what
the difference between them is. The answer would be iBoot.
iBoot is also named iBoot Loader or iBoot Agent. Just like the meaning of its name, iBoot act as
the guide agent between the iPhone hardware and iOS. Recovery mode needs to use iBoot
during the operation while DFU mode skips iBoot. In recovery mode, iBoot would detect the
firmware that flashed in and compare it with the current one. If the flashed one is lower than the
original version, iBoot will refuse to carry over the subsequent instruction and it would fail to
update the iOS. And that is the reason why we need to enter the DFU mode to downgrade iOS
instead of Recovery mode.
For Recovery mode, you can upgrade or restore your iPhone, which requires the latest iOS and
firmware. Because of the iBoot, it is not allowed to choose a custom firmware or choose the one
you want in Recovery mode.
But for DFU mode, you can not only upgrade your iPhone, iPad or iPod touch, but also
downgrade the firmware or choose a custom one for jailbreak or SIM unlock.
Are you agreed with the ideas above? Any questions please drop us a comment.