Iphone 4 stuck while putting in dfu mode?

My iphone 4 has stuck
i downgraded from ios 7 beta 1 to ios 6.1.3 <factory locked>

then phone wasn't activated because of factory lock

then i put my iphone into dfu mode by dfu ipsw <redsnow>

but my iphone was in soft dfu mode

then after reinserting the device my pc is not recognizing the device

i can't on that phone because of broken power/sleep button

please someone help me.

Normally just holding down power+home buttons for a minute or so fixes that, but since you can't try using itunes, it might detect the iphone even if the pc isn't

Do you remember how you put it in dfu mode? It's the same way but instead of releasing the power button you hold the power button and release the home button

Is your device's UDID registered? You'll have problems after running iOS 7 unless you register on a site like http://www.instantudid.com/ for $5. They fixed all my activation issues with my 4S.

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