Liteon DH-20A4P Not working

Help Please

I just recently bought the above DVD burner, I am using it via a usb caddy,

Windows wasnt reconizing it as a DVD burner only a Cd burner,

I tried updating firmware to 9P59 now it does nothing,

When I use Flash Utility or The 9P59.exe file,

I just get error msg saying, “Unable to Flash ‘Contact Vendor’”

It’s current firmware is OP5A

Any help would be great, or is it toast