Nec dvd rw nd-6500a

[qanda]This thread is about the NEC ND-6500A. Click here to see full specs[/qanda]I am having a problem with the reagon settings, I bought this off e-bay when I went to copy a dvd I got a message that the reagon was locked into reagon 4 and I can’t change it. I was told that I might be able to reset it by downloading the firmware is this true if so can someone direct me to the proper download