MOTOX XT1060 IMEI : 000000 how to fix

i have around 100 units same issue IMEI : 0000000000

moto x XT1060 verison

tryed all the firmware 4.4.4. , 5.1.
even try cross flash to xt1053, xt1058 but no success

from xda-developers http://ift.tt/29IR9NO
via IFTTT