@m4v3r ,
I think the ESC params installation failed during an upgrade. Not a big deal. Here is a procedure you should follow to get your ESC to a good state. We have been improving the update process, so hopefully this does not happen in the future.
get the latest voxl-esc tools on your voxl2. You can clone directly to voxl2 or to your PC and copy to voxl2 if your voxl2 does not have internet access
git clone https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc.git -b dev
stop px4
systemctl stop voxl-px4
make sure you can scan / detect ESCs . Note that based on your current state, the script should find at least one ESC running at 57600 baud rate, which would mean the param install failed (57600 is the fall back baud rate). This is ok.
cd voxl-esc/voxl-esc-tools
./voxl-esc-scan.py
install the params based on your motor / propeller configuration or any custom ESC param that you created. This script should find all the ESCs even if they are running at different baud rates
./voxl-esc-upload-params.py --params-file <path_to_esc_params_file.xml>
install latest firmware (this script will auto detect the board and pick the correct firmware). Please note that if the ESCs are detected at different baud rates, that needs to be fixed with the correct params (command above). This script will not automatically find the ESCs running at different baud rates (we will fix this soon).
./voxl-esc-upload-firmware-all.sh
Then you can start px4 again if needed
systemctl start voxl-px4