root unlock S7710

i av tried to unlock S7710 without succes bcoz ask to be rooted but not found root plz how can i get root of this phone?

Phone must be rooted!
If the software can’t root the phone automatically,
then you must root your device manually.
1. Power on the phone.
2. Enable ‘USB debugging’ in
‘Settings’-‘Applications’-‘Development’ for Android 2.x or
‘Settings’-‘Developer options’ for Android 4.x.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press ‘Unlock’ button.

Operation: Unlock
Selected model: GT-S7710
Software version: 23.9

Waiting ADB device… OK
Reading phone info…
Model: GT-S7710
Android version: 4.1.2
Product code: GT-S7710TAAFTM
Phone version: S7710XXANE3
PDA version: S7710XXANE3
CSC version: S7710FTMANE1
CSC country code: France
CSC sales code: FTM
HW version: MP 0.900
Phone S/N: RV1F30CGHJL
Modem board: DB8520H
RF cal date: 2014.03.06
IMEI: 352735060420960
Checking Super user right… false
This model not supported for auto root

Done with Samsung Tool PRO v.23.9