How to put iPhone in DFU mode easily
Many of you are facing the error (1) or error (6) while downgrading the firmware. In this situation, you need to put your iPhone in DFU mode, than restore or downgrade the firmware. Here is the easy way to do so:
Step 1. Turn off your iPhone.
Step 2. Hold Power and Home button, the iPhone should now be boot.
Step 3. When you see the Apple logo, release the power button but HOLD the home button.
Step 4. Open iTunes and wait for it to tell you in restore mode.
Also, NTL leave a comments to stated that how to put the iPhone in DFU mode easily. Take it as an alternative method if the above does not work for you.
Step 1. Connect iphone to USB then listen to the sound when it connect and disconnect.
Step 2. Hold 2 buttons until hear disconnect sound then release power button.
Step 3. Wait until hear another sound then release home button.