[Q] LG L Fino - SuperSU binary update failed topic

I recently got a new phone - LG L Fino (D290) - after some time I googled how to root it and found the PurpleDrake method. People said that it works and it saved their lives.
I tried it - PD said that everything was successful.. so I installed SuperSU and can't get it to update binaries, all I get is an alert that says "Installation failed"
There is no CWM nor TWRP recovery compatible with my phone.
Can anyone help?