I have a ZTE V9C Tab. When i was trying to upgrade the firmware, due to some problem it got hanged. Now when i connected it to the PC i get a message that "Unrecognised USB Device". When i checked the VID&PID it shows 0000 for both. I have the original PID&VID of the Tab. As per me there are two possiblities that either i modify the Original drivers files to recognise the Device with 0000 or is there any way to restore the VID PID of the tab.