Default [Help] Framaroot Not working

Hi, I've installed Framaroot in my Lg L7 and it doesn't root , show a error saying "Failed ... Try another exploit if available (Error #5)"
I only have Gandalf Exploit, what should I do to root this Lg L7 ? (I've already tried to root it with "Root LG optimus L7 " that have the RunMe.bat but when I try to Restore, it doesn't make anything to the mobile)