I have cube black and has Arducopter firmware and was trying to upload beta 4.0.4 rc4 which is released todays.
Unknownly I went legacy firmware upload page in MP and that too firmware upload interrupted.now cube showing now as Legacy FMU and its not booting at all .trying upload different firmware not at all worked keep on saying not detected board type.
MP asked board type and I have choosed pixhawk/cube no MP couldn’t detect board type so firmware upload failed.
I have choosed custom firmwrae method also but no luck to work .
Please any one help me to recover my pixhawk cube.
Also make sure you are using the latest Mission planner and I’d suggest using the beta version. You can get this by clicking get beta updates on the help page.