iPad frozen on startup, iTunes won't detect it

[PAUSIMS]

Hi guys,

I considered I had enough knowledge to deal with Jailbreak but it turns out I don't, altough now it's too late and I need some help from someone more experienced.

I tried jailbreaking my iPad (4.2.1 software version) with the latest redsn0w, just checking the "install cydia box". I noticed that Cydia doesn't work doing this, so then I installed it with the "just tethered" option and Cydia worked. I installed some packages and it asked me to reboot, I didn't remember that my Jailbreak was tethered and so then I remembered it and I thought that it would just startup without jailbreak.

But no, it's stuck on the Apple logo. I can't restore because iTunes doesn't even see it!! I messed it up and I don't know how to solve it.

I hope and pray for a solution without having to go to an Apple store because probably they won't fix it, right?

 

[PAUSIMS]

OK, I answer my original post. At first I tried with DFU but it didn't work. However, it was because I was pressing the wrong button combination.

Now, pressing the right combination of buttons I've been able to enter DFU mode and I restored the iPad

Sorry!