I have a Phantom 1 that was flying well and then suddenly gave the error message "TX stick(s) mid point error too big" (4 red LED's) and would not restart. Tried recycling transmitter/controller and power to unit, problem persisted. Installed latest Win driver and assistant software. When attempted to connect to quad USB after first powering up transmitter and then the unit/controller, I was unable to establish connection to the unit/controller. Changed to new, fully charged battery, uninstalled and reinstalled driver and NavaM software, have last/latest firmware installed in the unit. Now when I attempt to connect, when I connect the battery to the quad controller pigtail, I get no LED's and a continuous beeping and am still unable to establish a connection to assistant software. Any suggestions greatly appreciated.
John
John