Iphone4 won't boot after 5.1.1

So this is the situation:

I have an iphone4, wich recently I update to 5.1.1, OSX 10.8, thats ok at this point, then I want to restore the phone from the backup, and here's the problem, when the restore finish and the phone won't reboot, stay stuck in the apple logo, but here's a tricky part, Itunes recognize the phone completely :S I can see the app's music, storage etc

I really don't know why this happen, if someone have the same issue would be great some help

thanks