[Droneero]

Ok but how can i have the connection usb: coptercontrol, when i plug the cc3d i only have the COM4. Ans thanks a lot for helping i will try that and then i tell you

[Droneero]

I’ve done it and no joy. I’m stucked the problem it’s that the cc3d appears like serial i don’t know how to change that. Pls any suggestion?

[f5soh]

I’ve done it and no joy.

Please elaborate.
- Is the the Upgrade&Erase successful ? I mean, do you see at least a firmware upload displayed with a progress bar ?
- Did you reset GCS settings to defaults ?

[Droneero]

The main problem is that when i try to update and erase GCS says that i have to connect the board when it’s already connected. So i can’t upgrade nothing because GCS says that i have to connect it ehen it’s already done. I know it’s connected because when i plug the usb the led of the cc3d turns on and i’m recieving the Tx bar. I don’t know what to do more

[TheOtherCliff]

Have you tried:
- UNPLUG USB (and battery must also be disconnected)
- Press "Upgrade and Erase"
- THEN plug in USB

Does this work?  If not, what does it say?

[Droneero]

I have fixed the problem by using cleanflight. Librepilot didnt help me! Thanks all for your messages.

[Droneero]

Can somebody recommend me motors and proppelers for a 900 grams drone? Thanks