DVD Dual Firmware

I have downloaded and installed the DVD Dual Firmware for my DVD writer.
Is it possible to write Dual Layer DVD’s with the new firmware? I have LiteOn LDW-851S writer. It doesn’t support DL normally…

DVD Dual == Dual Format (+ and -)
Dual Layer, Double Layer, R9, R DL is what you’re looking for…

in otherwords… NO. the only drive liteon makes that can be upgraded to DL is 812s by way of upgrading it to an 832s.