iPad Maybe dfu loop

[dott.infernus]

Hi everyone. I'm Angelo and I'm newbie. I have a problem with my iPad 2 3G 32GB.
Few hours ago, I tried to update the iOs from 5.0.1 to 5.1.1 with the following guide:
http://www.jailbreakmatrix.com/howto/downgrade-a5-ipad-2-from-ios-6-to-5-1-1-below

some minutes after the updating was started, an error has occured: iTunes Error ...
I didn't know what it meant, so I clicked Ok (the only chance).
Then I checked my iPad and until now it seem dead. Totally dead!
I thought it was in DFU mode, so I tried to unDFU but nothing, it is still dead.
I looked for on the web and reading somewhere that it could be a DFU loop.
Is there anyway to restore my iPad? Please give me as many hands as you have!
Thank you in advance.

[EDIT 1]
when I open redsn0w in the bottom of the application it says: "Connected: iPad2 (DFU mode)"
but when I open iTunes it says: "iTunes has detected an iPad in recovery mode. You must restore this iPad before it can be used wih iTunes"

 

[labman]

So you have shsh blobs then? and what does your screen look like?

 

[TriJetHero]

It's in DFU

iTunes always says it's in recovery mode, it doesn't see the diffenrence between recovery and DFU

DFU is the black screen
Recoverry is the connect to itunes screen

Like labman asked; do you have the SHSH blobs for 5.1.1?

 

[dott.infernus]

The screen is completely black (like dfu)

and I haven't shsh for 5.1.1 (only for 5.0.1). Now I'm realizing how stupid I am.

 

[TriJetHero]

Hold home and power until it restarts

 

[dott.infernus]

I tried that trick a lot of time, but it doesn't work...

however I solved alone my problem cutting the head to the bull!!
I opened iTunes and I restored the iPad to 6.0.1, now I'm trying to downgrade it on 5.0.1 with my shsh saved yesterday.