Backing Up My Firmware

Hi Guys,
Not to sure if this is the right forum to be posting this question in. But I am hoping someone can point me in the right direction in regards to backing up my LG GSA-4081B DVD Burner firmware please.

Basically what I would like to know is what program should I use to do this with this particular drive and if I ever want to update the firmware do I use the same program to write the new firmware with?

Also I was just wondering out of curiosity if you have used up all of the region code changes of a DVD drive can these be reset to factory standard by reflashing the firmware?

Any help will be greatly appreciated.

Kind Regards
Erica