I download latest version of Software Assistant for my new PV2+. I installed the software on my Windows 8 PC, connected the USB cable, turned on the PV2+, but the software never connect to the device. I did power recycle on the device, plug and unplug USB cable, but no luck. Clicked the Upgrade, nothing came up, clicked Advanced, no info about battery. I guess it failed connecting PC and device. What's wrong with my setting ?