Readme - MMC-SDN Drive Support for PiCPro V18 If you are using PiCPro V18.0 SP2, SP3, SP4, SP5 you must use the firmware provided below. --------------------------------------------- Filename: MMC-SDN Drive Support - MMC-SDN R1.05.zip Description: ERROR: Control Response: Hex file too old for hardware. FIX: Download and extract file contents. The Zip file contains R1.05 SDN firmware and a new parameter CSV file. Copy the parameter CSV file to: G&L Motion Control Data\PiCPro V18.0 XXX\Personalities. Copy the firmware file to: G&L Motion Control Data\PiCPro V18.0 XXX\Firmware\MMCSDN