Bricked VS 986

Does anyone know if there is a way to fix using adb? I was told Jtag won't work. Or is there parts to replace that are cheaper than buying a new phone? I was rooted 11a and restored with the kdz then took the ota and rerooted. Some of my apps didn't work the same so I decided to go back and kdz back to 11a..... Now I have a brick. When I plug it in the charge light doesn't even go on and I can't get into download mode. Now I know I messed up by trying to downgrade back to 11a..... I get this when I run the ports bat
C:\Users\Bill Laptop\Desktop\G4 Root\LG Root zip>reg query HKLM\hardware\devicem
ap\SERIALCOMM

HKEY_LOCAL_MACHINE\hardware\devicemap\SERIALCOMM
\Device\QCUSB_COM8_1 REG_SZ COM8

My phone is recognized by my win7 pc as qualcomm hs-usb qdloader 9008

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