Help my iphone is stuck in DFU (blackscreen) mode!!!

my iphone 3gs is stuck at DFU mode after i restore to 4.3.3 and it cant wake up and is on blackscreen too!! I tried holding the home and the wake button for 10 sec and release the wake button and continue pressing the home button until the apple logo come out!! But none of this works!! Before i was stuck in the DFU blackscreen mode i just restore the 4.3.3 flimware but after restore the itunes say the iphone has been restored to factory settings but dint... it is still on DFU mode blackscreen after restore!! i tried iReb...RecBoot...TinyUmbrella...But none of them works!!! I also dont know if my phone is jailbroken!!!! So please help me so i can wake my phone up from DFU mode!!
-vlkt

It sounds to me like you either got defective parts or otherwise did not make the repair correctly. We cannot help with self-repairs here, the iPhone officially not user servicable, but you can ask for advice in the forums on ifixit.com, a site which is dedicated to those attempting their own repairs.
Regards.

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Can I still retrieve my data in iPhone 4s stuck in DFU mode?

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My iPhone is stuck i DFU mode

Now i have some problems with my iPhone 4g 16GB :
1- I played songs and listened it with my headphones , i plug it out from the iPhone and when i receive a call , i answer , then i can't listen who's speaking to me then a friend of me has told me that this problem was happened with him and he plug in , plug out the headphones many times and the receiver is worked i tried these steps many many times and nothing is happened .
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Hi akitestry,
If your iPhone 4 will not start up past the Apple logo, you should troubleshoot using the steps in this article -
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It sounds to me like you either got defective parts or otherwise did not make the repair correctly. We cannot help with self-repairs here, the iPhone officially not user servicable, but you can ask for advice in the forums on ifixit.com, a site which is dedicated to those attempting their own repairs.
Regards.

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Help my iphone is stuck in DFU (blackscreen) mode!!!

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