I had exactly the same problem as you. Don't worry, your devide is not bricked!
Look for a compatible ROM, make sure you have RK flashtools and, press the reset button on your device (make sure it is off) and turn it on while still pressing. Windows should detect it (In my case it had to be in Windows 7 - XP and 8.1 would not install drivers!! In the same laptop, with triple boot!!), install the drivers, choose the firmware and click on restore.
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