I was trying to use QGroundControl to fly a mission but every time I tried to upload the mission to the drone, I received and error that stated (MAV_MISSION_INVALID_SEQUENCE. I finally found this on this: (The SkyViper has its own app that runs on android or iOS, but to access the full capabilities of the ArduCopter firmware you may prefer to use another ground station package. The SkyViper can work with a wide range of GCS software, including MissionPlanner, QGC, Tower, MAVProxy etc. For each of them, set them up to listen on UDP port 14550. The SkyViper uses MAVLink2 by default, which doesn’t work with some older GCS software (such as Tower). To use those GCS versions you need to change the parameter SERIAL1_PROTOCOL to 1 from the default of 2. That will allow MAVLink1 GCS implementations to connect. As the SkyViper uses UDP broadcasts you can connect from multiple devices at once.) and changed the parameter.
That still didn’t work, so I decided to do a factory reset from the web page. When the SV restarted it would not respond to the controller. I looked at the web page for flight parameters and there were none listed. I then found instructions for placing facreset.txt on the SD card, but that did not work.
I would appreciate any help getting this reset so I can fly again.