cm2 mtk flash read error

Start at : [1/7/2016 / 1:10:53 PM]
Operation : Read Flash [ v1.40 ]

1. Power Off Phone , Remove battery , Insert back
2. Insert USB cable. In some cases require hold BootKey

Wait for phone…
Phone found! [ 30 ]
Sync…
Inital regs read done
Boot Info :
BB_CPU_ID : 6582
BB_CPU_HW : CA01
BB_CPU_SW : 8A00
BB_CPU_SB : 0001
BB_CPU_NM : [MediaTek] MT6582_S00
Processing BROM stage
SecCfgVal : 0x00000000
BromVersion : 0xFF
BLVersion : 0x01
Preloader Status : Alive
Processing DA stage
DA Select done , sending
DA Ver : MTK_AllInOne_DA_v5.1540.01.01
NAND_ID : 00000000000000000000000000000000
eMMC_ID : 90014A4838473264040503A2895D12B1
DA Stat : v4.2 on BBID : 0x87
DA Sent. Configure setting now …
DA started successuflly
eMMC FlashIC initialized
[eMMC] : FLASH_VEN : 0090 , OEM : 014A
[eMMC] : FLASH_INF : [HYNIX] , d2G8
[eMMC] : FLASH_CID : 90014A4838473264040503A2895D12B1
[eMMC] : FLASH_EXT : 0x00400000 , 0x00400000 , 0x00400000
[eMMC] : FLASH_LEN : 0x00000001D2000000
[eMMC] : FLASH_UCP : 7456 MiB
INT RAM : 0x00020000
EXT RAM : 0x40000000
BOOT TYPE : EMMC_FLASH_BOOT
SOC VERIFY : C1
Boot Ok!

Reading Flash Conent now …

Brand : iris
ProdName : IAL
ProdModel : Alfa L
Device : wt6582_wt_sz_l
AndroidVer: 5.0
MTKxCPU : MT6582
MTKxPRJ : ALPS.L0.MP2.V1_WT6582.WT.SZ.L_P6

[Read Ok] : preloader_wt6582_wt_sz_l.bin
[Read Ok] : MBR
[Read Ok] : EBR1
[Read Ok] : lk.bin
[Read Ok] : boot.img
[Read Ok] : recovery.img
[Read Ok] : secro.img
[Read Ok] : logo.bin
[Read Ok] : EBR2
[Read Ok] : system.img
[Read Ok] : cache.img
[Read Error] : Bad EXT data
Looks like unusable file , break!

Read error 🙁

Operation Failed
Elapsed: 00:04:48
Reconnect Power/Cable!

Finish at : [1/7/2016 / 1:15:41 PM]