----If your box does not work at all;
----If your box runs very slowly and alway stuck;
----If your box reboot loop on the animated logo all the time and can't enter the system;
----If your want to reset your box factory.
Enter the recovery interface to clean the datas of your box by reset button()
find the "data/factory reset",click it, when it completed.
reboot your box.just wait for about 5 minute. you can enter the system of your box again.