Nero won't release my Sony DRU-820A

Hi im new to this site… i just installed a new sony DRU-820A on my computer and upgraded its firmware aswell… but the drive is still giving me 2x speed for some reason… i tried to the run the CDSpeed software by Nero and it asks me to release the Sony drive… and few seconds later says “Relase Failed”… is that whats keeping my drive from burning to its full or even closer speed? And how will i be able to fix this issue? Thanks for the help!