Iphone 4s can not be restored [Fixed DFU Mode - Error (9) Apple - iOS8]

Question

Good day to all. The following occurs: 

I connected to iTunes iphone 4s, and gave me the option to upgrade to iOS 7.1.2 to iOS 8.0.2. Download the software from iTunes, everything perfect, the iphone was updated, and immediately after finish installing the software, went out, and stood in eternal DFU mode. 

Now try to manually restore all frimware (7.1.2 - 8.0 - 8.0.1 - 8.0.2) 

Already out of DFU tried the manual way (with the combination of buttons) 

I've tried it out of DFU with third-party programs (Tinyumbrella and wondershare) but the only thing they do is to stop the message to connect to iTunes appear, but instead let me iPhone with eternal manzanita, lasts a few seconds, it turns off and comes out the apple, and so on until forced him to enter DFU again. 

I took him to an apple store (in usa) and was told that if system failure they could not help (pff) plus the computer is out of warranty. 

I appreciate your help greatly.

Answer 1

When installed TinyUmbrella (at least when I tried it some time ago) I modified the hosts file itunes. 

What I try, on another computer, and if possible with Windows or Mavericks (Yosemite gives problems) is to restore, using a newly installed on a computer that has never had programs that modify or extract information iphone itunes. 

It will tell us if he was lucky.

Answer 2

I tried on three different macs, even with two different cables, even TinyUmbrella not use much later. I will look as hosts itunes restore and try your luck. Thank you!