lg d802 repair failed

please help
Welcome to Medusa Pro Software version 1.6.5.
Started.
Reader #0: FT SCR2000 0
Reader #1: Generic EMV Smartcard Reader 0

Model Settings:
Interface : USB
Brand : LG
Model : D802
SRF : C:/Program Files/Medusa Pro Software/firmwareFolder/LG_D802_USB.srf
Core : Qualcomm MSM8974
Loader : LG_loader_v1

Connecting...
Sending loader... Failed.

Model Settings:
Interface : USB
Brand : LG
Model : D802
SRF : C:/Program Files/Medusa Pro Software/firmwareFolder/LG_D802_USB.srf
Core : Qualcomm MSM8974
Loader : LG_loader_v1

Connecting...
Sending loader... Failed.

Model Settings:
Interface : USB
Brand : LG
Model : D802
SRF : C:/Program Files/Medusa Pro Software/firmwareFolder/LG_D802_USB.srf
Core : Qualcomm MSM8974
Loader : LG_loader_v1

Connecting...
Sending loader... Failed.