mt6580 bricked and say MTK USB Port

hi all brothers
after read firmware with cm2 my phone get bricked
in device manager i see MTK USB Port but disappear after 2 seconds
any idea plz?
phone model
coral x1+
MT6580 alps gxq6580 weg l gxq6580 weg l 5.1 ALPS.L1.MP6.V2 GXQ6580.WEG.L P39