LG GDR8162B flash gone bad


I have a dead LG GDR8162B DVD drive due to a bad flash. I was already at v.0020 and decided to flash it to v.0033. That went fine but then it had trouble reading a DVD which I knew I did not have trouble previously.

I tried to flash it back to v.0020 and that is when the flash went bad and now my Sony computer does not recognise the DVD drive and so I cannot even reflash it.

Any help would be greatly appreciated. Are there utilities and tricks to get this drive back? And be recognized and re-flashed?