i started with the https://www.youtube.com/watch?v=m7mfMej6Y5I&t=4s this video. i flashed the firmware
2.To enter DFU i shoult press h-rst button on the mainboard 3 or 4 times in row. This make DFU mode active for me.
same as the link above, the printer see mcu on dfu mode i made the make command on this mode. After this mode i made the firmware upgrade from the official site ( march update)
For now, after restrart there is no change.
thanks to all