lg d855p no download mode disable by task swithc

i try erase flash by medusa and write the boot and still cant get download mode Log
started at 30/12/2015 06:21:39 p.m. …
Welcome to Medusa Box Software version 2.5.9.2T
Downloading file "lg_d855p_usb_EN.htm"…
Downloading file "img/LG_D851_TP.png"…
Downloading file "lg_d855k_usb_EN.htm"…
Connecting to server
Retrieving files list
Downloading file "C:\Program Files\GsmServer\Medusa\Firmware\lg_d855p_repair.mf .zip"…
Operating Mode: EasyRepair Mode
Selected device model: LG D855P USB
Connecting. Please wait…
MI: Loading Medusa Device Server V2.USB.
MI: Connecting to Device Server.
MI: Initializing.
MI: Flash ID = 0xE0450001.
Interface : USB
CPU : Qualcomm MSM8974AC
Storage Device: Sandisk eMMC SDW16G
Device ID : 00450001
Block size : 512 bytes
Blocks : 30777344
Storage size : 14.7 Gb
Opening "C:\Program Files\GsmServer\Medusa\Firmware\LG_D855P_Repair.mf " file…
Writing SBL1 section. Please wait… Done
Writing ABOOT section. Please wait… Done
Writing BOOT section. Please wait… Done
Writing LAF section. Please wait… Done

Disconnected
Repair done.
Operating Mode: Advanced Mode
Selected device model: LG D855P USB
Connecting. Please wait…
MI: Loading Medusa Device Server V2.USB.
MI: Connecting to Device Server.
MI: Initializing.
MI: Flash ID = 0xE0450001.
Interface : USB
CPU : Qualcomm MSM8974AC
Storage Device: Sandisk eMMC SDW16G
Device ID : 00450001
Block size : 512 bytes
Blocks : 30777344
Storage size : 14.7 Gb
Connect successful.
Erasing BOOT section. Please wait… Done
Erasing FIRMWARE section. Please wait… Done
Erasing CUSTOM section. Please wait… Done
Erasing BOOT section. Please wait… Done
Disconnected

Operating Mode: EasyRepair Mode
Selected device model: LG D855P USB
Connecting. Please wait…
MI: Loading Medusa Device Server V2.USB.
MI: Connecting to Device Server.
MI: Initializing.
MI: Flash ID = 0xE0450001.
Interface : USB
CPU : Qualcomm MSM8974AC
Storage Device: Sandisk eMMC SDW16G
Device ID : 00450001
Block size : 512 bytes
Blocks : 30777344
Storage size : 14.7 Gb
Opening "C:\Program Files\GsmServer\Medusa\Firmware\LG_D855P_Repair.mf " file…
Writing SBL1 section. Please wait… Done
Writing ABOOT section. Please wait… Done
Writing BOOT section. Please wait… Done
Writing LAF section. Please wait… Done
Disconnected