Update process to 4.0

Hi everyone

Could someone point me to process to update mission planner and black cube to latest stable 4.03 ?

I have 3 copters set up and I’m worried I mess up the current settings


If you download dataflash (.bin) logs using MissionPlanner, it will create the .param files too - or of course use the button to same params as a file.
The you can just do the update in the section to upload new firmware and existing parameters will get converted as required.
If there’s a problem, downgrade the firmware and put the old params back in place.

In my experience the upgrade works without issues - but always go over the params and check for yourself.