help me repair imei


>>Current Task:
USB Wirte IMEI
>>
>>Operation:
1. Power off the phone.
2. Please insert USB cable within 40 seconds.
>>
>>MediaTek PreLoader USB VCOM (Android) (COM31)
>>
>>Connecting…
>>CPU TYPE:MT6572
>>Hardware version:CA01
>>Software version:0000
>>SecCfgVal :0x00000000
>>BromVersion :0xFF
>>BLVersion :0x01
>>Boot downloading complete!
>>EMMC_ID:0x1501004B3557564D420110A34239907D
>>EMMC_PRODUCT_NAME: 0x4B3557564D42
>>EMMC_BOOT1_SIZE: 0x00200000
>>EMMC_BOOT2_SIZE: 0x00200000
>>EMMC_PRMB_SIZE: 0x00080000
>>EMMC_GP1_SIZE: 0x00000000
>>EMMC_GP2_SIZE: 0x00000000
>>EMMC_GP3_SIZE: 0x00000000
>>EMMC_GP4_SIZE: 0x00000000
>>EMMC_USER_SIZE: 0x0E9000000(3.64 G)
>>
>>INT RAM: 128KB SDRAM EXT RAM: 1GB DRAM
>>Find partition success.
>>find imei file failed!
>>Update IMEI failed.IMEICode:14C14F0A0C000000