Info 2 [Q] Unable to instll Stock

HI,

Trying to flash stock ZVC. so that i can upgrade to ZVD.I dw the TOT,LG Flash Tool and dll files, replaced the megalock dll file with new one, followed the procedure, Surprisingly after the yellow icon is clicked a few minutes of progress in the COM box it says ready, after this nothing happens, I mean for a while........... and on my phone its in debugging mode 0% in small letters suuser and rooted readable. Nothing happens. What could be the solution,