sm-g890a 5.1.1unlock root need help me friends

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. Tap 7 times on ‘Build number’ in ‘Settings’-‘About phone’ to enable ‘Developer options’,
go to ‘Settings’-‘Developer options’ and enable ‘USB debugging’.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press ‘Unlock’ button for direct unlock or ‘Read codes’ to read security codes.

Operation: Unlock
Selected model: SM-G890A
Software version: 25.5

Waiting ADB device… OK
Reading phone info…
Android version: 5.1.1
Product code: SM2G890AZBAATT
Phone version: G890AUCU3BOJE
PDA version: G890AUCU3BOJE
CSC version: G890AATT3BOJE
CSC country code: USA
CSC sales code: ATT
HW version: REV0.5
Phone S/N: R38G60HLK4Y
Modem board: SHANNON333
RF cal date: 20150617
Checking Super user right… false

Done with Samsung Tool PRO v.25.5