lg p500 flashing problem

Checking data…OK
Platform: LG Qualcomm
Selected port: COM130
Selected model: P500
Reading info…Failed!
Port busy
Performed by 2.3.1 software version.
——————————————————————————–
Checking data…OK
Platform: LG Qualcomm
Selected port: COM130
Selected model: P500
Reading info…Failed!
Port busy
Performed by 2.3.1 software version.
——————————————————————————–
Checking data…OK
Platform: LG Qualcomm
Selected port: COM130
Selected model: P500
Reading info…Failed!
Port busy
Performed by 2.3.1 software version.

clean pc and latest software also tried

dnot use usb hub