[Q] Oppo N5207 topic

Hi, i tried to root my phone but now i losted wifi and i don't know if my phone is rooted.
Before i try to root i update my OS.

Do somebody have steps to backup my phone and root it ? please

I have downloaded a zip file at this link : http://forum.xda-developers.com/oppo...t3009313/page2
but i don't understand what i have to do after.
I have downloaded the twrp apk and install it on my phone, and extract the zip file in twrp folder, but but but but.....what can i do with no wifi ?
i don't understand.....HELP ME PLEASE !