Help cdrw drive won't turn on after firmware

CD, DVD and (Ultra HD) Blu-ray Writers
#1

lG GCE-8481B won’t turn on after firmware update from the lg site
my computer cant recognize it :o how do i make it turn back on
help would be appreciated

#2

http://club.cdfreaks.com/f36/lg-cd-drives-dont-work-my-computer-after-firmware-update-253280/