Mtk 6572 eMMC_ID : 7001004D4D4330344702031A19815089 Always stop in middle operation

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Voice mobile model v40 mtk6572 [ eMMC_ID : 7001004D4D4330344702031A19815089 ] always stop in middle on format option ,Hope will be fixed soon .Or may be i,m doing some mistake ,plz check and tell me exact fault ,what is going wrong by me .

Code:

Wait for phone...
Phone found! [ 10 ]
Sync...
Inital regs read done
Boot Info : 
BB_CPU_ID : 6572
BB_CPU_HW : CA01
BB_CPU_SW : 8A00
BB_CPU_SB : 0000
BB_CPU_NM : [MediaTek] MT6572_S00
Processing BROM stage
BLVersion : 0xFE
SecCfgVal : 0x00000000
BromVersion : 0x05
BLVersion : 0xFE
Processing DA stage
NAND_ID : 00000000000000000000
eMMC_ID : 7001004D4D4330344702031A19815089
DA Stat : v4.2 on BBID : 0x88

Code:

Wait for phone...
Phone found! [ 10 ]
Sync...
Inital regs read done
Boot Info : 
BB_CPU_ID : 6572
BB_CPU_HW : CA01
BB_CPU_SW : 8A00
BB_CPU_SB : 0000
BB_CPU_NM : [MediaTek] MT6572_S00
Processing BROM stage
BLVersion : 0xFE
SecCfgVal : 0x00000000
BromVersion : 0x05
BLVersion : 0xFE
Processing DA stage
NAND_ID : 00000000000000000000
eMMC_ID : 7001004D4D4330344702031A19815089
DA Stat : v4.2 on BBID : 0x88
NAND FlashIC initialized
[NAND] : FLASH_VEN : 0x0000 , [SAMSUNG] K9F5608Q0C
[NAND] : FLASH_DIE : 0000 0000 0000 0000 0000
[NAND] : FLASH_LEN : 0x00000000

NAND not supported yet :(

INT RAM    : 0x00000000
EXT RAM    : 0x00000000
BOOT TYPE  : DONE
SOC VERIFY : 00
Boot Ok!

Boot Error!
Elapsed: 00:04:17
Reconnect Power/Cable!