A few days ago it worked perfectly. I than rooted my phone made some mistakes and had to install a new factory stock rom with the Zv9 update. The phone is not rooted at the moment. Now whenever I try to connect it to the PC with a usb cable it says that the device is an unrecognized device. I have used the LG mobile support tool and installed usb drivers and this did not fix the problem. Whenever I plug it in I do not even recieve the option to mount unmount sd card. I have factory reset my phone and this did not fix the problem. Thanks for any assistance even if it is just a simple reference to another source of how to fix this problem.