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Flashes a firmware image to a single MyActuator motor over CAN. The motor reboots into its bootloader and the image is streamed to it as a YMODEM-1K transfer — the same transfer the vendor setup software performs — so no Windows tooling is needed to update a motor in the field. Nothing else may talk to the motor while this runs, so power the arm but leave it idle.
This overwrites the motor’s firmware. Interrupting a flash leaves the motor sitting in its bootloader with a partially written image — it will not answer normal commands, but re-running this command recovers it. Do not power-cycle and assume the motor is lost.