DW822A+ Backward Firmware Flashing Help

Hi people, I am trying to flash backwards my DW822A+ burner. Presently, the firmware is B3LC-2. I want to flash back to B3HC. I tried using the normal window based program from BenQ, but it failed. How can I do this? Please help. Thanks.

I have sent you a link to a .cvt file that should solve this problem. Flash it with WinDWFlash.