How to repair Invalid Imei Intex aqua power

How to repair Invalid Imei Intex aqua power

Waiting for USB Port…
Set MediaTek PreLoader USB VCOM Port (COM5)
Please Hold "ON" to connect with the phone…
Connected to Phone.
CPU: MT6592 SW:0000 Ver: CA00
Downloading Boot8 …
EMMC Size: 0x01D2000000
Flash Type: EMMC
INT/EXT RAM Size: 0x0+0x0
Checking IMEI DATA…
IMEI1:FFFFFFFFFFFFFFF
IMEI2:FFFFFFFFFFFFFFF
Verify…Done.
>>IMEI OK.
:):):):):)