Iphone stuck downloading ios7?

I downloaded ios7 on my ipad and it was fine. I have an iPhone 4. I'm downloading it from my computer. I checked iTunes and it said error and it couldn't download ios7. ITunes doesn't even show my phone connected to my computer anymore. My phone is now on the screen where it has the apple sign and the loading bar underneath it. It won't finish loading. I know I shouldn't unplug it but what should I do?

Try to put your iPhone in DFU mode.

Entering DFU Mode (Official Instructions)
Plug your device into your computer.
Turn off the device.
Hold the Power button for 3 seconds
Hold the Home button without releasing the Power button for 10 seconds
Release the Power Button but keep holding the Home button
Keep holding the Home button until you are alerted by iTunes saying that it has detected a device in Recovery Mode

My iphone is stuc… Help

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