How to Put iPhone in DFU Mode
Sometimes, in order to restore your iPhone firmware using iTunes, you need to put iPhone into Recovery Mode. But if recovery mode doesn’t work for you and you could not restore you iPhone, then you need to Put your iPhone in DFU Mode. Lets learn how to enter iPhone in DFU Mode in order to restore its firmware.
Step 1
Open iTunes and connect the iPhone via USB.

Step 2
Press and hold the Home button and the Sleep/Wake button at the same time.

Step 3
Continue holding the both buttons for exact 10 seconds. Then release the Sleep/Wake. Keep holding the Home button until iTunes pops up that it has found an iPhone in Recovery Mode.

Your iPhone screen will look like this:

***NOTE***
It may take a few attempts to get your iPhone into DFU mode. Generally, I hold down both buttons then release the Wake/Sleep button just before I think the Apple logo would appear. If you are still holding both buttons down and you see the Apple logo you are holding them down for too long!
Tags: DFU Mode, iPhone, iPhone Guides, iPhone Tutorials
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[...] Step 8 After restoring backup, we will need to perform another restore but in this one we will put the iPhone in DFU Mode. Learn how to put iPhone in DFU mode. [...]
nice post my friend, as you said after the step3 i got message on my itunes that its in recovery mode. So i restored, but still it s in recovery mode, because when i tried to jailbreak its stopping in between. So please tell me after the step 3 seeing the message on the itunes what do i need to do to get DFU mode?? Thanks in advance
Just switch the iphone off and use redsn0w to jailbreak, redsn0w will guide you through the DFU mode as you go.
iPhone DFU Mode Animation: http://www.youtube.com/watch?v=aES6bEY18F4
[...] If it’s the first time you’re jailbreaking your iPhone, Be ready to follow directions now to get into DFU Mode. [...]
Thanks for guiding me through how to put iPhone in DFU MOde
[...] Start iTunes and put your phone into DFU mode: How to Put iPhone in DFU Mode [...]
The redsn0w DFU instrctions are different, and do not always worked. That’s what happened to me, and these instructions got it working for me. Thank you
[...] Start iTunes and put your phone into DFU mode: How to Put iPhone in DFU Mode [...]
my iphone refuses to go on dfu..i know how to put it on dfu coz i already did those steps when i was upgrading my 1.1.4 to 2.0 2.2 and 3.0 i have 2g iphone…but now it doesnt seem to work i was trying to jailbreak and unlock on OS 3.0 using redsnow but it cant i mean it wont go into dfu even when im in itunes its not reading… any thoughts about this or help is highly appreciated…thank you…
[...] you’ve entered into DFU Mode, RedSn0w will do its work and on successful completion, your iPhone/iPod Touch will [...]
[...] you’ve entered into DFU Mode, RedSn0w will do its work and on successful completion, your iPhone will [...]