MCU Protocol error. Cant update klipper version.

Hi mates, after last full update, it seems that my VC3.1 doesnt work. I tried to update klipper with the configurator, octopus V1.1 board (automatic flashing, supposedly) where the setup detect a version mismatch too, but automatic flashing doesnt work, and flash manually with SD seems that the board cant burn firmware.bin. Any ideas to restore it? Thanks.