redmi 2 imei success change but when i check imei no chenge

Reading Phone Information …
Build No : MPSS.DPM.1.0.c7.18-00021-M8916EAAAANUZM-1-all14
IMEI : 666C1202120E125
ESN : 00000000
Writing IMEI1… OK
Writing IMEI2… OK

Please Factory Reset Your Phone to complete the operation
HINT: (Go to Settings > General > Backup > Erese/Factory data reset press ‘Reset phone’ and ‘Erase everything’ buttons)
Stopping ADB Service… OK
Operation Time: 00:00:03

help hua dongle support team