http://forum.xda-developers.com/android/development/stock-firmware-rom-unbrick-lg-k7-k330-t-t3432878 Had the same prob guys, do this to the exact letter and this will fix it.
http://forum.xda-developers.com/android/development/stock-firmware-rom-unbrick-lg-k7-k330-t-t3432878 Had the same exact prob, found this. Do this to the exact letter and itll fix it. It worked for me.