elcarpanta

Hi I have this problem (sorry, my English is so bad): I update by usb the mini nvr and now don't works, only i can do is start the main page and i can't move the mouse. I can access to nvr by telnet, and move inside by telnet., thats all. What can i do? i tried to update by USB but is impossible. Start the main page and anything else. Help, please!!!