After restarting the 1811w went into romon.
i try the xmodem command it shows
rommon 2 > xmodem -c c181x-adventerprisek9-mz.151-4.M6
Do not start the sending program yet...
dir: cannot open device "flash:"
WARNING: All existing data in bootflash will be lost!
Invoke this application only for disaster recovery.
Do you wish to continue? y/n [n]: y
ERR: Not enough memory to download image
is there any command that can erase ios from flash when in romon mode?