Visit sometimes Zonet ZUC2700 website we recommend. It will help you to use your Quantum XK6 hardware to the fullest Kyocera extent.
There, you can download the latest Quantum XK6 updates of firm ware and Zonet ZUC2700 drivers for your PIXMA MX300 device. You can also create EASYSHARE M380 restore points of your system in case of program failure. You would be able to retrieve initial state easily and try installing a Quantum XK6 driver one more time. If you have an outdated PIXMA MX300 unit, you won’t be able to find the matching Quantum XK6 driver thereto.