Overwriting Sony FW with Lite-On

I am still fooling around trying to get my Sony CRX300E to work. I upgraded to the KSY2 firmware with very poor results. I downloaded the LTC-48161H FW from the liteon site, it is an exe file. I run it, says install successful, but when I reboot and check the drive, it is still coming up as KSY2.

How do I overwrite the KSY2 FW?

Also, in case that does not work, how do I overwrite the KSY2 with KSY1? I have tried using the LtnFW installer, but it won’t let me overwrite KSY2 with KSY1.