Motorola XT531 unlocking done.[Reference]
problem: lock
gadget:sigma box
guide:
1.power on the phone install all driver
2.open sigma software
3.select qualcom interface
4.select comport
5.click direct unlock
Done:
gadget:sigma box
guide:
1.power on the phone install all driver
2.open sigma software
3.select qualcom interface
4.select comport
5.click direct unlock
Done: