Firmware NEC 1300a

[keats]

Thanks for reading

Can someone please tell me if there is and what it is
the difference between a
NEC DVD RW 1300a (mine)
and
NEC DVD RW ND 1300a

Or are they the same thing

I would like to update the firmware but am trying to be carefull not to use the wrong one. I seem to get a lot off dead links to the firmware.
Have downloaded n107v4af.exe from Herrie.rpc1.org
but am a bit doubtfull whether to go ahead this is new teritory for me. Any advice would be greatly appreacated.
Steve.