LG d625 not Unlock

Welcome to Octoplus/Octopus Box LG Software version 2.1.6
Platform: LG Infineon
Connection mode: Modem
Selected model: D625
Please, power phone ON, connect Micro USB cable, go to "Settings" ->
"General" -> "PC Connection" -> "Select USB connection method" and
select "LG Software"…OK
Reading info…
IMEI: xxxx58-06-107256-2
Firmware version: LGD625AT-01-V10b-SSV-TLF-DEC-05-20140
Creating EEPROM backup…
Switching to Download mode…OK
Initializing flash…Failed!Failed!