Wrong flash



hi guys,
it seems that I flashed my dvd-writer with WinDWFlash v1.03
but I read in a few sites that WinDWFlash v1.03 is actually not for my pc anyway.
but my dvd-writer isn’t recognised anymore and it doesn’t appear on hardware manager at all.
I don’t know what to do.
I got a Dell Dimension E520

Thanks in advance.:bow: