cat /dev/mtd/3 > /tmp/backup.img -----to telnet backup
cd /tmp && eraseall /dev/mtd/3 && cp backup.img /dev/mtd/3 && reboot --to flash an image using telnet
get /tmp/mybackup.img c:\mybackup.img ---ftp to get backup
cd /tmp && eraseall /dev/mtd/3 && cp backup.img /dev/mtd/3 && reboot --to flash an image using telnet
get /tmp/mybackup.img c:\mybackup.img ---ftp to get backup