Wanting to change a bit, I had a look at Xamarin. First issue, have my HTC One X working with the debugger.

I had to :

• Download latest google usb drivers : http://developer.android.com/sdk/win-usb.html
• Update the file android_winusb.inf to add following lines below [Google.NTx86] and [Google.NTamd64]

; HTC One X
%SingleAdbInterface% = USB_Install, USB\VID_0BB4&PID_0CED
%CompositeAdbInterface% = USB_Install, USB\VID_0BB4&PID_0CED&MI_01

• Execute shutdown /r /o
• After reboot go to Troubleshooting > Advanced > Startup options > Reboot > F7
• Connect the phone
• Activate USB debugging in Android
• Run devmgmt.msc
• Right click Android phone, then Update Driver > Find a driver on my computer > Choose in a driver list... > Disk
• Insert path to android_winusb.inf
• Accept security warning

Execute adb devices to check the phone presence :

C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
HTxxxxxxxxxx    device

Easy, thanks to following links:

• http://stackoverflow.com/questions/11012944/android-adb-driver-for-htc-one-x/13327665#13327665
• http://forum.xda-developers.com/wiki/BN_Nook_Simple_Touch/Installing_ADB
• http://www.howtogeek.com/167723/how-to-disable-driver-signature-verification-on-64-bit-windows-8.1-so-that-you-can-install-unsigned-drivers/
• http://docs.xamarin.com/guides/android/getting_started/installation/set_up_device_for_development/