With this file I've finally managed to get into the usb the original firmware. It is very easy.
With a minimum of 4 GB flash drive, open the USB Image Tool.exe in the Favorites tab, we give and take the picture Add ke are the zip.
In this image give it a name, ke keramos and give us a Restore.
The image is put in the usb and you can put it in the Azbox, and start with the official image.