HYOSUNG MX-4000W Operator's Manual page 331

MX-4000W 7. Appendix
3) Plug the USB drive in USB slot and press left-top function key, "SOFTWARE UPDATE".
4) Press left function key, "YES".
When "YES" button is selected, new software in USB drive is transferred to a dedicated
directory(ATM) and ATM will start to reboot automatically.
7- 111