I am posting here as I definitively ran out of ideas... All I am trying to do is to simply installa a custom recovery to install a new rom on my Gpad 4.4.2 build KOT491v50020d. I tried almost everything I could think of, including the step 3 at the beginning of this thread, using flashify, using some other tools that I don't even remember the name... None of them worked! I was just able to break the factory recovery and managed to restore it with the LG Mobile tool. After that, I got completely stuck. Using the method described at step 3 here seemed to work (i changed the model number as suggested to 500d), the script runs fine, it tells me it finishes, it restarts the device and then go back to the Android normal screen. Tried both with cable plugged and unplugged, no success. What else I can try? Can you help me? Thanks a lot to whoever will find me a way to get out !!!