ola estou um lg e455f que fica travcado na tela inicial, ja tentei passar varias flash nele usando a octoplus mas todas da este erro abaixo

Welcome to Octoplus/Octopus Box LG Software version 2.7.6
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Platform: LG MTK
Selected port: COM16
Selected baudrate: 921600
Selected model: E455F
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found at port COM15
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 A: 352293-06-479121-8
IMEI B: 352293-06-479122-6
Bluetooth address: 88:C9:D0:27:1B:1A
Wi-Fi MAC address: 34:4D:F7:04:85:F8
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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Performed by 2.7.6 Software version.
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Checking data...OK
Platform: LG MTK
Selected port: COM16
Selected baudrate: 921600
Selected model: E455F
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found at port COM15
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 "LGE455AT-00-V10a-EUR-XX-MAY-13-2013+0.oct"...
Writing Firmware...
Checking partition...
Reading partitions...
Formating filesystem...OK
Unlocking Bootloader...OK
Writing FILE_INFO...OK
Writing MBR...Failed!
Error code: QAZ6CQAWB5
Performed by 2.7.6 Software version.
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG MTK
Selected port: COM16
Selected baudrate: 921600
Selected model: E455F
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found at port COM15
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!
--------------------------------------------------------------------------------
IMEI A: 352293-06-479121-8
IMEI B: 352293-06-479122-6
Bluetooth address: 88:C9:D0:27:1B:1A
Wi-Fi MAC address: 34:4D:F7:04:85:F8
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
--------------------------------------------------------------------------------
Selecting output file...OK
Destination file: "E455F_352293064791218_27-10-2017_09-43-15.EEP"
Reading EEPROM...OK
Performed by 2.7.6 Software version.
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG MTK
Selected port: COM16
Selected baudrate: 921600
Selected model: E455F
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found at port COM15
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!
--------------------------------------------------------------------------------
IMEI A: 352293-06-479121-8
IMEI B: 352293-06-479122-6
Bluetooth address: 88:C9:D0:27:1B:1A
Wi-Fi MAC address: 34:4D:F7:04:85:F8
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
--------------------------------------------------------------------------------
Repairing EEPROM...Failed!
Performed by 2.7.6 Software version.
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG MTK
Selected port: COM16
Selected baudrate: 921600
Selected model: E455F
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found at port COM15
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 "E455F V10K_00.oct"...
Writing Firmware...
Checking partition...
Reading partitions...
Formating filesystem...OK
Unlocking Bootloader...OK
Writing FILE_INFO...OK
Writing MBR...Failed!
Error code: QAZ6CQAWB5
Performed by 2.7.6 Software version.
alguem sabe como resolver, obrigado

Bom dia, esse modelo tem alguns aparelhos que simplesmente não se consegue passar flash, tenho alguns que era simplesmente para tirar a senha padrão e não se consegue fazer isso, ele não reseta de maneira alguma. Não sei te dizer o porque isso acontece mas alguns desse modelo simplesmente não vai.