Reset Motorola MB8600?

I upgraded to a Hitron CODA56. before setting the new cable modem up, I tried to go into the admin of the MB8600. It forced me to change the user name and password, and I did. Oddly it won't let me in with the new credentials. I tried the old but that didn't work either. The thing is very sensitive that 2 tries disables login until another 15 mins after. Do it too early, it's another 15 mins. 

I don't have much use for it right now so I wanted to fiddle with it some more just cuz.. and so I can see what the whole admin UI is. 

What is a way to reset it completely? it's not on the manual or on motorola's site.