Please I need help to reset the device. I upgraded to the last version and the power was down. Noe It goes into the install procedure normally after the insertion of a USB key with the image file. But during the upgrade it stops to copy and to instal the image file at the middle of the procedure. I changed the usb key, I recopied the file, I redownloaded the file ..... every time I start a new procedure steps, it stops during the job at the middle of the installation and does not end the job. Please whould like to help us to reset the device and rebuild it again? Thanks.