I'll be the first to admit I royally screwed myself here through lack of reading. I came here from the evo 4g lte after upgrading and decided it was time to root this phone. I had the zvc update. Here was my exact process:
1. used ioroot- successful
2. used flashify to flash twrp- unsuccessful (secure boot error)
3. flashed zv7-aboot.img through adb- phone gives up the ghost
So now my phone is stuck at the LG logo and the led that usually lights up when it is booting stays dark. I can get my phone into download mode but no further. Any and all help is welcome.