Need help to update firmware of msi cd writer

I have an msi-8340 cd writer and i am having a problem to update it’s firmware.

when i try to update it says no cd writer found and quits

has anyone had the same problem please help

I need to update firmware as it is not allowing me to burn high speed cd at their appropraite speed eg a 40X cd i am only allowed to burn at 32X

thanks for help