Incomplete Flash 20A1H... dead?

Hi, I have a problem while I was flashing LiteOn 20A1H, the lights went out and now my LiteOn drive is dead. It identifies as “LITE-ON DVDRW LH-20A1H 0L0A”. I tried to use the flash utility but the Write flash button is greyed. How can I recover the drive? Thanks for your help :bow:.

After looking for every possible methods, including MTKFLASH, the easiest way was to simply download the stock firmware and flash it. I should have gone to this method first. :o