i wish i could help, but most times when my G6 lite would black out or not even be recognized, i just keeps trying over and over again till it worked. But i'm guessing you may have already tried that. It may in fact be dead, unfortuanitly. I would personally recommend just getting a new flashcard, since even if you did find a fix for your G6 lite, the new piracy checks in recent roms are just too much for the G6 tyo handle. And it doesn't help that the G6 has abandoned updating it as well.
I had to give up on my G6 a couple weeks ago and ordered an Acekard 2. Its alot cheaper (only $13) and is constantly being updated. I received it in the mail today, so i just need to figure out how it works.