So I tried this:
   (stty -f /dev/tty01 clocal; stty speed 57600) </dev/tty01 >/dev/tty01

   But it didnt' work, too. Any suggestions?

What, precisely, are you trying to do?  The whole point of `-f' is to
tell stty(1) to open a different device.  The redirection is
superfluous and will just cause the shell to hang trying to open the
device because there's no carrier.