Hi I got same error, I put ipad in recovery mode by pressing home key and power button. Once it ask for connect to itunes. Connect it to any computer running itunes. it will ask you to restore or update. I selected update and after downloading new IOS, Ipad restart, at this moment Itunes will show a message that ipad will restart. Same time i disconnected ipad and it start remaining process without itunes. after completion of whole process my ipad reset successfully.