Hi... I have an "Emprex 4x DVD+-RW" drive which really is a BTC 1004. I had a little firmware mishap so I am now booted into dos and using the command "mtkflash 3 w /b four.bin" to flash my drive. After hitting enter, It says "MTKFlash by Joseph Lin, MTK 1998 (Ver. 1.80) and then stops there with a flashing prompt in the bottom left hand corner. I have tried 1.81 as well with the same results.... HELP!