Duos 2 Flash by Spflash

My duos 2 is based on mediatek Chip its clone and I was trying to install cwm through Spflash tool I did backup with mtk droid tools. I did whole format with spflash by accident now its all black no booting up etc. what should I do? I did try to install again with backup but its still black. :confused::confused::confused::confused:

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