Unhappy [Q] My Karbonn A4 is dead. I need to unbrick..help me!!!

I am trying to unbrick my smartphone for last 2 month.
I have tried different tools, Still my problem is not solved.

Please guide me.

Actually I am getting error as "S_DA_DRAM_NOT_SUPPORTED [error 3004]"

Please explain me briefly to unbrick my smartphone..