Reseting a Fortigate Appliance - Forget Password

I reset the password of the appliance - by the following steps

1. connecting the console port, 9600 8N1
2. reboot and login with user "maintainer" and password "bcpbFGTxxxxxxxx" where FGTxxxxxxxx is the serial number of the appliance
3. "execute factoryreset"

Now the control of the appliance is back to my hand! Of course, the settings and configurations are gone.