bad address = DNS issue, check your network connection, it has nothing to do with the box or the image.
If you want to flash a new image, download the zip, unpack it on a USB stick, plug the stick in the box, and see if it is mounted. When it is, run
ofgwrite /media/usb/update/lunix/cfe/
( note: this is assumping the USB stick mounts on /media/usb, and you've unpacked the zip in the root of the stick )