please we should try to understand that before unlocking this model successfully. its requires following the step
while phone is off press vol- insert cable you will fastboot directly
open adb shell anywhere, and start by
1) fastboot erase modemst1
2)fastboot erase modemst2
from the folder you extracted the modem you downloaded for xt1601
right click open adb shell, use this command
3)fastboot flash modem NON-HLOS.bin
4) press vol- connect usb phone in fastboot use vol up or down scroll to bp tools press power dont disconnect usb untill phone reboot makesure u install
driver motorola qc diag
5)open sigma qcom interface select the phone from bar, click direct unlock,
6)after unlock flash your gsm modem 1 and 2 open fastboot in each modem file i.e 1 and 2 use this command, fastboot flash modem NON-HLOS.bin
7) download RSD lite put phone in fastboot and flash the firmware after flashing you will surelly see networt after 1 or 2 minute
ihave unlocked many many perfectly dont forget to preess thanks buttom