I recently locked myself out of my mac with a firmware password. what makes it worse is that I tried to install snow leopard on a 2011 macbook pro with thunderbolt, so I deleted my hard drive and upon reboot could not access anything not even a command line or anything. The only thing that does boot is a lion dvd until it comes up with a mobile me lock code which is weird because its booting from DVD. any ideas on how apple gets a hash from the firmware screen maybe i can then run it through john the ripper or even send the hash to apple myself. Whats worse is that everything was fine before this and I even tried installing lion onto the hard drive using another mac pro (I have 3 of them) and popping it back in the new mac but all i get is a white screen. The firmware lock is my main problem. (newer macs firmware does not allow anything older then lion to be installed). I can't install anything on it and I don't want to Drive 50 miles to the nearest apple store.