qustion from team

hi i want to imei repair mtk based huawei like g610-u20-00 g700 g730 and much more
with other tools repair done and ok but after factory reset imei is back to befor repair
so qustion is with zzkey dongel when im repair imei after factory reset its back to old imei or not?
if yes im want to but this dongel
tnx B.R