For OTA Update under Rpi i used this: http://www.virtualhere.com/
- just install it on the Pi, stop the controler software
wget http://www.virtualhere.com/sites/default/files/usbserver/vhusbdarmpi2
vhusbdarmpi2 -> for Pi2 only (see homepage for other platforms)
sudo chmod +x ./vhusbdarmpi2
- start the virtualhere server
sudo ./vhusbdarmpi2
- install the client on your Windows System
- Mount the Com-Port
- start MYSControler
- do what you want to do
- stop client
now you have to reboot your rpi, stop virtualhere server its not enoth, cant mount device again. After restart everythinks works well.
Greetings