HOWTO: Install T-Mobile G2 USB Driver

While Googling for G2 USB driver does currently lead to some pages that list working instructions for installing the driver on M$ Windows machines to connect to a T-Mobile G2 Android phone through USB with adb, many of the search results were not useful, and this post is small contribution to help direct folks to a solution. (Plus, who knows what will happen to the info pages at tmobile.com, with AT&T acquiring T-Mobile.)

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After installing the Android SDK, and selecting to install the latest Google USB Driver package with the SDK and AVD Manager, edit the android_winusb.inf file, located in the directory where the Google USB drivers installed (which currently is android-sdk/extras/google/usb_driver), and paste in the following three lines, at the end of the sections labeled "[Google.NTx86]" and "[Google.NTamd64]".

;T-Mobile G2
%SingleAdbInterface%        = USB_Install, USB\VID_0BB4&PID_0C91
%CompositeAdbInterface%     = USB_Install, USB\VID_0BB4&PID_0C91&MI_01

Then, connect the G2 to the computer with a USB cable, ensure the phone is in debug mode, and follow the remaining instructions at http://developer.android.com/sdk/win-usb.html

Note that it's sometimes necessary to repeat this process after downloading and updating the Google USB Driver package, as the updates can clear out the previous custom configuration changes.