Problems to connect to NXT brick

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I'm using nxt-python 1.2.0, PyBluez 0.22, PyUsb 1.0.0 with Python 2.7 and LibUSB-Win32 1.2.6.0 on Windows 10. I tried to connect to my NXT brick with bluetooth and with usb but I could not get it to connect either way.

With bluetooth, I get the following error:

IOError: a connection attempt failed because the brick didn't reply fast enough

When I execute one of the example programs.

However, python still manages to give the bluetooth adress of the brick (or something else I dont know) using 'host' even if it's not turned on ! nxt.locator.find_one_brick() gives nxt.bluesock.BlueSock object at 0x04481630

When I try to use usb, I get:

USBError: [Errno None] libusb0-dll:err [control_msg] sending control message failed, win error: The specific file cant be found.

nxt.locator.find_one_brick() gives nxt.usbsock.USBSock object at 0x0750ADF0

Can you please help me to connect to the brick with at least one of the both methods. Thanks

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