Desperate for bit setting! 1004

please can anyone help me to get bitsetting to work on my 1004 v49 . i have tried everything normal i think!

i can now use dvdbitset 104 without it ejecting the disk but it wont change to dvd rom( i select it in the lower box and set it)
media type :DVD+R
on disc book type: DVD+R

dvd book type
your set: DVD-ROM

but disc info is still dvd+r

i need help please !!!
p.s i dont know how to flash my drive using dos(floppy)
i always use the windows updates

many thanks:a :a