I have successfully upgraded the firmware for my BenQ DW800A to 822 to version B3JCY-2 and then to B3KC so it’s now able to support both +r/-r at 8x and dual layer at the same time.
One thing, when I burn +r disk at 8x, it took about 30 min (it used to take 8 min). Also, using dvd shrink to encode a dvd movie took 1 1/2 hour where it took about 30 min before.
Any suggestion or idea why this is or how to fix it? Thanks!