Alcatel 2012G unlock error

I try to unlock this phone in two diferent computers using win xp but no luck, check log

SigmaKey v.2.19.04
372XXXXXX Sigma dongle 2.19, Initializing…OK
Pack 1: Not activated
Pack 2: Activated
——— 2016-10-14 04:02:44 ———
SigmaKey 2.19.04 MTK: Get unlock codes
Plug the USB cable into the powered off phone…
MediaTek USB Port (COM52), Provider: MediaTek Inc., Driver ver.: 2.0.1136.0, Date: 06-11-2014, USB\Vid_0e8d&Pid_0003&Rev_0100
Error opening serial port