DVD Device not recognised as a DVD Device

Hi,
I am having a very annoying problem.
Since installing arch (quite a while ago) I have not been able to use my DVD device for DVDs.  It is recognised as a CD-ROM only, whereas it is really a DVD reader / CD burner (not dvd burner).  I have been able to use this for reading dvds on windows, then when i used to be on ubuntu.  Arch doesn't see it properly.
When Arch loads, i notice Universal CD Device Driver or something, version 3.20, is loaded for hdc (my device).  I think it is not recognised properly.
I have tried manually mounting different devices, checked dmesg for any changes between reading a dvd and reading a cd (no new lines in dmesg when a dvd has been inserted).  It is really, really strange and I do not know what to do.
Can someone please help me?  I can download the drivers for my device (windows tho) if that helps.
Any response is greatly appreciated.  Thanks

yes I have that, no difference.  I think it is a problem with the firmware that is flashed onto the device itself, or something like that.  is there a way to flash firmwares in linux?  all the toshiba firmware installation things, or the rpc1.org stuff are all for windows.  how can i do it?
or, if there is a way, i'd like to reset to the original firmware, is there any possibility of that?

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