write firnware failed

Welcome to Octoplus/Octopus Box LG Software version 2.0.3
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Checking data…OK
Platform: LG MTK
Selected port: COM1
Selected baudrate: 921600
Selected model: E460
Selected USB connection type
Please, disconnect battery and connect cable…OK
Phone found.
CPU name: MT6575
CPU revision: 8A00.CB00.E201.0000
Setting power state…OK
Prepairing loader…OK
Sending loader…OK
Synchronizing with loader…
Loader version: 3.2.132
Detecting flash chip…OK
Detecting EMMC flash chip…OK
Reading info…OK
Opening "LGE460AT-00-V10f_00.oct"…
Writing Firmware…
Formating filesystem…OK
Unlocking Bootloader…OK
Writing FILE_INFO…OK
Writing MBR…Failed!
Error code: QAZ6CQAWB5
——————————————————————————–
Checking data…OK
Platform: LG MTK
Selected port: COM1
Selected baudrate: 921600
Selected model: E460
Selected USB connection type
Please, disconnect battery and connect cable…OK
Phone found.
CPU name: MT6575
CPU revision: 8A00.CB00.E201.0000
Setting power state…OK
Prepairing loader…OK
Sending loader…OK
Synchronizing with loader…
Loader version: 3.2.132
Detecting flash chip…OK
Detecting EMMC flash chip…OK
Reading info…OK
Opening "LGE460AT-00-V10f_00.oct"…
Writing Firmware…
Formating filesystem…OK
Unlocking Bootloader…OK
Writing FILE_INFO…OK
Writing MBR…Failed!
Error code: QAZ6CQAWB5
Connecting to server support.octoplusbox.com:82…OK
Authorizing…OK
——————————————————————————–
Checking data…OK
Platform: LG MTK
Selected port: COM1
Selected baudrate: 921600
Selected model: E460
Selected USB connection type
Please, disconnect battery and connect cable…OK
Phone found.
CPU name: MT6575
CPU revision: 8A00.CB00.E201.0000
Setting power state…OK
Prepairing loader…OK
Sending loader…OK
Synchronizing with loader…
Loader version: 3.2.132
Detecting flash chip…OK
Detecting EMMC flash chip…OK
Reading info…OK
Opening "LGE460AT-00-V10p-EUR-XX-JAN-07-2014+0.oct"…
Writing Firmware…
Formating filesystem…OK
Unlocking Bootloader…OK
Writing FILE_INFO…OK
Writing MBR…Failed!
Error code: QAZ6CQAWB5
——————————————————————————–
Checking data…OK
Platform: LG MTK
Selected port: COM1
Selected baudrate: 921600
Selected model: E460
Selected USB connection type
Please, disconnect battery and connect cable…OK
Phone found.
CPU name: MT6575
CPU revision: 8A00.CB00.E201.0000
Setting power state…OK
Prepairing loader…OK
Sending loader…OK
Synchronizing with loader…
Loader version: 3.2.132
Detecting flash chip…OK
Detecting EMMC flash chip…OK
Reading info…OK
Checking security…
Checking security passed!
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IMEI: 358568-05-814474-6
Bluetooth address: 2C:54:CF:17:54:12
Wi-Fi MAC address: 2C:54:CF:A7:0E:0A
EMMC rpmb size: 2 Mb
EMMC boot1 size: 2 Mb
EMMC boot2 size: 2 Mb
EMMC gp1 size: 0 Mb
EMMC gp2 size: 0 Mb
EMMC gp3 size: 0 Mb
EMMC gp4 size: 0 Mb
EMMC user area size: 3696 Mb
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Repairing EEPROM…Failed!

It can be EMMC problem?