[HD] problem with FW update

[u.vivarelli]

I've this Hitachi HD (60Gb)

;
; Hitachi : HTS726060M9AT00

I read in the fw.pro these files for my HD
;
"HTS726060M9AT00","MH4OA60A","MH4OA6GA","MH4IA6GA.bin","hfui12H.exe","IA6GA","/u MRHA6GA.tbl"
"HTS726060M9AT00","MH4OA65A","MH4OA6GA","MH4IA6GA.bin","hfui12H.exe","IA6GA","/u MRHA6GA.tbl"
"HTS726060M9AT00","MH4OA69A","MH4OA6GA","MH4IA6GA.bin","hfui12H.exe","IA6GA","/u MRHA6GA.tbl"
"HTS726060M9AT00","MH4OA6BA","MH4OA6GA","MH4IA6GA.bin","hfui12H.exe","IA6GA","/u MRHA6GA.tbl"
"HTS726060M9AT00","MH4OA6DA","MH4OA6GA","MH4IA6GA.bin","hfui12H.exe","IA6GA","/u MRHA6GA.tbl"

so, I think that the correct string is this:

hfui12h.exe oa6ga mh4ia6ga.bin /f mrha6ga.tbl

then "He" said: invalid *.bin mh4ia6ga.bin not correct ecc ecc...

why?