How to rebuild imei null of samsung i8190 (MT 6575)

I format this phone for google account and after that the imei is showing null, please how will I repair it? Below is the info of the phone;



Available Ports:COM25



Analysis of USB port,Please insert phone USB cable.

Connecting...

CPU TYPE:6575

Hardware version:CB00

Software version:E201

Boot downloading complete!

FlashID:002C00BC00900055

Flash Type: NAND_MT29C4G48MAZAPAKD

FlashLen:20000000







Analysis of system files...

PRELOADER: addr:0x000000 --length:0x040000

DSP_BL: addr:0x040000 --length:0x0C0000

__NODL_NVRAM: addr:0x100000 --length:0x300000

__NODL_SECCFG: addr:0x400000 --length:0x020000

UBOOT: addr:0x420000 --length:0x060000

BOOTIMG: addr:0x480000 --length:0x500000

RECOVERY: addr:0x980000 --length:0x500000

SEC_RO: addr:0xE80000 --length:0x120000

__NODL_MISC: addr:0xFA0000 --length:0x060000

LOGO: addr:0x1000000 --length:0x300000

__NODL_EXPDB: addr:0x1300000 --length:0x0A0000

__NODL_FAT: addr:0x13A0000 --length:0x1400000

ANDROID: addr:0x27A0000 --length:0xDC00000

__NODL_CACHE: addr:0x103A0000 --length:0x3C00000

USRDATA: addr:0x13FA0000 --length:0xB620000

__NODL_BMTPOOL: addr:0xFFFF0050 --length:0x000000





Format addr:0x13FA0000 --Format length:0xB620000

>>Read phone information success.

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