Motorola QC Diagnostic Driver installation on Windows 7 64-bit
First, you'll need the Motorola Device Manager . The driver files will probably get installed to C:\Program Files\Common Files\Motorola Shared\Mobile Drivers\Drivers You'll need to run Notepad or your favorite text editor as Administrator, and edit the motport.inf file. Add the following lines underneath both the [Motorola] and [Motorola.NTamd64] sections. Note, the PID_XXXX code in the strings below may vary depending on the device you're trying to connect. This particular one is for a first generation Motorola Moto G phone. %USBMOTQCDIAGPORT% = USBMOTPORT, USB\VID_22B8&PID_2E91&MI_00 %USBMOTQCDIAGPORT% = USBMOTPORT, USB\VID_22B8&PID_2E29&MI_00 Sources: http://forum.xda-developers.com/showpost.php?p=53094886&postcount=398 http://forum.xda-developers.com/showpost.php?p=55014382&postcount=686