1. Turn power on
2. Stop-Break (Stop-A)
3. Yank PROM (YES, POWER SHOULD BE ON - WARNING, MIGHT FRY MACHINE!!!)
4. Enter new mode
5. Put back PROM (YES, Still power on!)
6. Load default values by entering 'set-defaults' at ok promt.
7. Power cykle - PROM password should be gone...