iPhone Into DFU Mode

DFU Means Device Firmware Update . If a restore Useing


Recovery Mode Doesn't Work You will want to use DFU


Mode


As a last Resort . when Placing Your iphone in to a DFU


mode it


Does not Load the OS before Attempting The Restore



To put the iPhone into DFU mode so you can do an iTunes firmware restore follow these steps:


Step One
Open iTunes and connect the iPhone to your PC or MAC

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

Step Three

After exactly 10 seconds release the Sleep/Wake button. Continue holding the home button until you iTunes pops up a message telling you that it has detected an iPhone in recovery mode.

The iPhone screen will remain black like this: