Firmware Update
D158/D159/D160/D161/D170 6-8 SM
6. Turn the main power switch. "Please wait…" appears.
7. Press the "OK" key
8. Press “Execute”. Update will start.
9. After update is finished, turn off the main power, switch SW2 to OFF, and unplug the SD card.
10. Turn on the main power, then the new firmware will be working.