If your card reader disconnects mid-cycle, the controller may enter a hard-locked state. Ensure your USB port connection is entirely stable before clicking start.
Attempting to flash your MXTronics card with a tool intended for a different controller model can permanently brick the device, rendering it completely unresponsive to computers. mxtronics sd card firmware link download
Before attempting to flash new firmware, you must prepare your hardware: Backup Your Data: Flashing firmware will erase all files on the card. Use a Card Reader: If your card reader disconnects mid-cycle, the controller