hi everybody, i'm new here, nice meeting you all. here's my probleme, i made the huge error of reseting my jailbreaked ipad because the restauration didn't work and i wanted to be ride of cydia. when i started the reset to erase all information on the ipad the screen became black with the logo apple and a bar which should show that the process is happening but doesn'tand it's totally blocked, itune doesn't detect it and i can't even shut it down. it's been two hours now and i don't know how to stop the process. Could anyone help me please.