Habeis probado con el siguiente truquillo?
- Editar "<your-android-sdk-folder>/usb_driver/android_winusb.inf"
- Aņadir las siguientes lineas despues de [Google.NTx86] o [Google.NTamd64]
;NVIDIA Tegra
%SingleAdbInterface% = USB_Install, USB\VID_0955&PID_7000
%CompositeAdbInterface% = USB_Install, USB\VID_0955&PID_7100&MI_01
Si no teneis el fichero, aqui teneis las instrucciones (en ingles sorry) tomado directamente del XDA
Launch the SDK by double-clicking SDK Manager.exe, at the root of your SDK directory.
Expand the Third party Add-ons and Google Inc. add-ons.
Check Google Usb Driver package and click Install selected.
Proceed to install the package. When done, the driver files are downloaded into the <sdk>\google-usb_driver\ directory.
To install the Android USB driver on Windows for the first time:
Connect your Android-powered device to your computer's USB port.
Right-click on Computer from your desktop or Windows Explorer, and select Manage.
Select Devices in the left pane.
Locate and expand Other device in the right pane.
Right-click the device name (such as Nexus S) and select Update Driver Software. This will launch the Hardware Update Wizard.
Select Browse my computer for driver software and click Next.
Click Browse and locate the USB driver folder. (The Google USB Driver is located in <sdk>\google-usb_driver\.)
Click Next to install the driver.