Question Liggy and Dee!
I am unknown to me the model NEC ND-4550A Firmware 1.84 with the appearance of the old model LG-Chipset in it is the same as in models 3550 \ 3551 \ 4550 \ 4551 (NEC D636458M)Do you have any operations on it using your Liggy's NEC drive converter are possiblein that particular copy.http://liggydee.cdfreaks.com/page/en/NEC-Drive-Converter/
This looks like another OEM firmware for the ND-4550A. I only had 1-84 for the ND-4551A so far.
However the Drive Converter utility will be of no use for you.
Liggy thanks very much for your reply.Apparently this is the OEM Fujitsu Siemens sold only in their PCs.He was also the NEC ND4551A having the same appearance (photo for reference)It may be useful to someoneNec4550A 1.84 firmware bin.https://rs951p4.rapidshare.com/cgi-bin/rsapi.cgi?sub=download&fileid=1265977145&filename=NEC%204550a%201.84org.rar&bin=1&cookie=ECA7D81F5FE4074FB09B3A3C7FB89D620EC1CEC700CEF9EEE4936A59CC31574273D0E30E4AE683200DF2331CE0130B0B