Followed steps to upgrade firmware on copter and controller. Copter succeeded and confirmed success by log file on usb card. Proceeded to upgrade firmware on controller. Controller did not display expected signals. Waited 12 minutes then shut the system down. Log file said copter upgrade successful and controller upgrade failed. Reformatted sd card and tried again. This time controller displayed no signs that jt was working and log file was not even present on sd card. Thanks a bunch for any help.