After update, i can't connect to MCU

Canboard (ebb42)…

Can be updated by “CAN”

or

Canboard (ebb42) MUST BE updated by USB conection (to rPi)?

I have conected and configured by “CAN”

extract of cfg

canbus_uuid: 32c452993a02

[fan]

pin: EBBCan:PA0

[heater_fan hotend_fan]

pin: EBBCan:PA1

heater: extruder

heater_temp: 50.0

[tmc2209 extruder]

uart_pin: EBBCan: PA15

run_current: 0.40

stealthchop_threshold: 0

interpolate: True

sense_resistor: 0.11

driver_TBL: 0

driver_TOFF: 4

driver_HEND: 6

driver_HSTRT: 7

edit… time ago i asked something similar… link to post…