What is the difference between DFU and Recovery Mode?? and how can you enter them??





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Published on Mar 23, 2010

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Recovery Mode : Recovery Mode is a state of iBoot that is used during standard upgrades and restores. As iBoot is active, it does not allow you to downgrade your devices software. Also, unless it is pwned, it will not allow custom firmware to be flashed.

DFU Mode : DFU Mode is a special mode where the device can still interface with iTunes, yet it does not load the iBoot. The screen will appear totally black in DFU mode, so you cant guess whether the device is in DFU or powered down from simply looking at the screen. Because iBoot and the OS are not loaded this exploit makes us able to downgrade your iPhone firmware or upgrade with a custom firmware created by Pwnage tool.

How to put your iPhone in recovery mode : 1. Turn the device completely off and disconnect it from cable/dock.
2. Hold down the home button.
3. While holding down the home button connect to a computer with a cable (easiest) or dock.
4. Keep holding down the home button until you see a connect-to-itunes screen You are now in recovery mode.

To escape Recovery Mode and power the phone off simply hold down power and home buttons for ten seconds.

How to put your iPhone in DFU mode : 1. Connect your iPhone to your computer.
2. Turn iPhone off.
3. Hold power and home together for 10 seconds (exactly).
4. Release power but keep holding home until the computers beeps (observed on a PC) as a USB device is recognized.
5. A few seconds later iTunes should detect your iPhone.
6. If the Restore Logo is present on the screen, you are in Recovery Mode, not DFU.


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