"Felipe, in the event you choose to upload a different firmware in the future, it is not necessary to unplug everything.
If I'm remembering correctly, I don't recall any documentation explicitly stating that it is necessary to upload firmware before…"
"It's a long shot but when my Pixhawk arrived with the DIY kit the Arducopter firmware was not loaded. MP would always time out when I tried to connect. After I uploaded the firmware it finally got through. I assumed that the Pixhawk had to be…"