FW Upgrade 3.3.3 > 3.4.x

Hi Group, Pixhawk >> 2.4.6 platform refers

I want to upgrade from 3.3.3 to the current stable client >> 3.4.6 ?
Do one have to somehow erase the 3.3.3 first, if so, how to erase it?
Or do one just continue via MP and download/install the FW as per usual?

Likewise, if I want to downgrade from 3.4.6? to 3.3.3,
what is the correct procedure, if any?

Thank you for your valuable feedback.


Just upgrade by flashing 3.4.6 parameters will be renamed, and PID scaled properly automatically.

Thank you Andre,