Default [Q] Can't root phone. What to do?

Hi guys. I can't root phone. I have got android 4.1.2 V20B and All in One program. Cmd see my phone - 'device attached' . In All in One I press 1 for root. Then it writes that I have to go to recovery mode. I turn off phone. Then press vol down and S/W Upgrade Please waiting for upgrading... shows and nothing happens. What should I do?

edit: Already done. I didn't hold power button with vol down. That's why it didn't work.