I'm doing a first time set up for my 3DR Quad using an APM 2.6 board. I've managed to install the Mission Planner software and the device drivers for the APM. I've set the baud rate to 115200 on both the Com port and in MP and selected the correct Com port in the MP drop-down menu (the MP drop-down doesn't show the APM - only the port number?).
When trying to install the arducopter firmware, it goes through the process of connecting with the APM and then starts downloading the Hex file. I then get a "failed upload" prompt with an error message "Communication Error - no connection".
I've tried using a powered USB hub in case my USB voltage wasn't sufficient, but still have the same problem.
Does anyone have any idea on how to resolve this issue?