LG LM-V600TM User Manual page 167

A connection is not established when you connect the
device to a computer
Make sure the USB cable you are using is compatible with your device.
Make sure you have the proper driver installed and updated on your
computer.
Downloaded application causes a lot of errors
The application is corrupted or it is incompatible with the current Android
OS.
Remove and reinstall the application.
Appendix
166