Hi @MacRorie,       These files reset the Arduino correctly, but I had made a mistake soldering the SIO wires to the Arduino, but once this was fixed, the SDrive Max worked correctly. On Linux (Ubuntu), I reset the Arduino with:   $ sudo avrdude -c usbasp -pm328p -P usb -U flash:w:eeprom_clear.ino.with_bootloader.standard.hex avrdude: warning: cannot set sck period. please check for usbasp firmware update. avrdude: AVR device initialized and ready to accept instructions Rea
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