Annoyed

Been looking for the firm ware update for my artec DHM-G48R DVDROM the version i have says it is 7.50 but all the sites I have looked at the highest version I have found is 5.XX something Can anyone help me out here.
Not sure if this is allowed here or not if not sorry
Anyone know where i can find the flash file to make this drive region free

program I have been using to see drive info is DISC Info Version 1.5.5

just search for DHM-G48R @ the firmwarepage

when your shown firmware is 7.50 then it´s a DHM-G48RC DVD-ROM