Smile [Q] Huawei G700-u20 - Root/custom rom help needed

Hi guys!

Great forum. Goot my first Android device ever yesterday: Huawei G700-U20. I would like to root it and add a Custom rom (KitKat 4.4).

Got some problems in the first stage tough: installed Framaroot (and my phone is supposed to be supported according to the list), but when opening the app it says: "Your device seems not vulnerable to exploit included in Framaroot"

What am I doing wrong?

It this the only opportunity to root the phone? As you can see - I'm very unexperienced, so please bear with me