LG F180K Dead After Flash

I flashed LG F180K using flash file from support now phone is dead with no more download mode. Phone was stuck at LG logo but can still flash. Now is totally dead. It seems like every time I use Octopus LG to flash LG phone, it kills the phone. This is the third time it kills the phones with Octopus LG. It kills boot with no download mode every time. Why is that? Why is there no warning for flashing. One phone flash complete but still stuck at LG logo but again no download mode after flash. Other stop in the middle of flashing. I should not have tried but now I learn the hard lesson, again.