Unable to connect to NXT using NeXTTool via USB cable For reasons beyond me, the NXC program MotorControl22.rxe in my NXT has disapeared. So i thought I'd just download it from my computer over to the NXT using NeXTTool.

This is where the trouble begins. Firstly, I have no problems listing the NXT in my devices when connected and turned on. I have also been able to upgrade the firmware twice during my troubleshooting, trying to find a solution. But for some reason, using the NeXTTool, I'm not able to connect. I've tried downloading the file using NeXTTool \COM=usb -download=MotorControl22.rxe and after that tried NeXTTool /COM=usb -listfiles=MotorControl22.rxe with no result.

This made me test just listing anything from the NXT, but even writing NeXTTool /COM=usb -listfiles didn't show anything, even though I have confirmed that there are several programs, sound files etc on the NXT.


I'm currently running Windows 8.1 64-bit
The driver is libusb-win32
I'm running NeXTTool from Windows cmd with admin rights
I don't get any error messages upon running the download command
This has not been a problem earlier upon installing and verifying that everything works.
Flashing a new firmware works just fine when in Update firmware mode using NeXTTool -firmare="firmware.rfw"
Bluetooth works too, but upon running the download command, nothing happens.


Has anyone run into this problem before? Anybode have any idea how to simply download a file to the NXT and what might be causing it not to work now?
Joubarc's idea would probably be your best bet - try downloading the file to the NXT using the official LEGO software. If this fails, you know something is wrong with your brick. If it works, it's probably a problem with your program. Did anything major happen between the time it would work and the time it wouldn't? If so, this may be the culprit. Trying it on multiple bricks is also another avenue I would suggest. There is an official Mindstorms Help Section on the LEGO Message Boards located here. They have experts who will probably be able to correct your problem.