In case of problems with flashing mediatek-based drives like the one from BTC, I would suggest using MTKFLASH under pure DOS.
With this little proggy it should be possible to get almost every drive back to life again. There should be enough Tutorials on how to use this tool, if you
search a little on cdfreaks.com.
But be sure to use Version 1.80 because older versions will probably not work with this drive. In case you cannot get a working firmware binfile (those from "The dangerous brothers" should work), I could provide you with binfiles vor version 0037, 0038 or 0039.