Restart error after upgrade

After the last firmware upgrade I not able anymore to connect to the printer.
I tried reflashing the firmware, without success.
Thank you

mcu ‘mcu’: Unable to extract params from: config_stepper

This type of error is frequently caused by running an older
version of the firmware on the micro-controller (fix by
recompiling and flashing the firmware).

Known versions: host=v0.10.0-112-g9ecddd1b, mcu=v0.9.1-568-ga0c27571, rpi=v0.10.0-112-g9ecddd1b

Once the underlying issue is corrected, use the “RESTART”
command to reload the config and restart the host software.
Protocol error connecting to printer

You need to compile a new firmware and flash it to your board. Follow the instruction here: Installation - Klipper documentation respectively special instructions depending on your controller board

Thank you Sineos, I was not clear in my explaination. I already compiled and flashed the firmware.

Obviously not:
Klipper Host on the RPI: host=v0.10.0-112-g9ecddd1b
Klipper Firmware on your MCU: mcu=v0.9.1-568-ga0c27571
Klipper Linux “Firmware”: rpi=v0.10.0-112-g9ecddd1b

Ok now I understood. I had linux process selected and I updated only the rpi.
Thank you