Error flashing LG E455G

Hello team have an e455g hang on LG logo tried to flash it but result is always error.

Welcome to Octoplus/Octopus Box LG Software version 2.2.7
——————————————————————————–
Checking data…OK
Platform: LG MTK
Selected port: COM206
Selected baudrate: 921600
Selected model: E455G
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 "LGE455GAT-00-V10c-EUR-XX-MAY-13-2013+0.oct"…
Writing Firmware…
Formating filesystem…OK
Unlocking Bootloader…OK
Writing FILE_INFO…OK
Writing MBR…Failed!
Error code: QAZ6CQAWB5
Performed by 2.2.7 software version.