Yes, but i prefer use the cashflow STS software and the cable serial, I succesfull change the flash chip, and turn on the coin changer, but now, a error appear, coin sensor error, i change the discriminator, thinking that maybe is the coil sensors, but no, still the same error, then I try to connected to the PC and software and dont communicated, I look at the signal tx with an oscilloscope, to know if the signal reaches the pin of the microcontroller, and if it arrives, so dont know is a problem of baudrates. Dont know how measure the baudrate with oscilloscopes, so I will solder a tiny cables to my logic analyzer