Need some advice

I don't know if i'm posting in the right section, but needless to say i'm trying to root my T-mobile LG G4, I'm following the guide on XDA, it says to download the tar.gz file, which I did, then it says to extract it, which I did..but the file name stays the same, and in the guide it says that if you don't get the "system.rooted.phonemodel.img" then you didn't extract it properly..But to the best of my knowledge there is only one way to extract a file..I'm using z-zip, I extract the file, it's like 4.6gb which sounds about right but the file name is wrong..I'm totally lost and really want to root my phone, I've rooted several others before so this isn't new to me, but i'm currently having problems rooting my g4. Any and all help would be GREATLY appreciated..Thanks in advance.

Also here's the guide I'm "trying" to follow.
http://forum.xda-developers.com/g4/o...t-lg-t3164765/

-DecodedDroid