I fully reset my netduino plus2, to reinstall the tinyBooter. I don't know why but, the netduino stop to work when I use SAM-BA to select the serial port.
At the beginning, my netduino was not recognized by the computer when in bootloader mode, the tinyBooter was never showed in MFDeploy. Only when I do not press the pushbutton, that MFDeploy show tinyCLR, so I fully reset, hoping to fix it, but all was wrong.
So now, when I try to emulate a COM port to the board stop to communicate with computer, and nothing appear on MFDeploy or SAM-BA.
Someone could help me?