Fix Firmware Ml2165 Ml2168 Chip Reset Printer Samsung 676 Link -

Hold the button again for about 15 seconds until the LED stays solid green, then release. This report displays the CRUM series number. The Firmware Reset Process (Step-by-Step)

Some users report success by turning the printer off, unplugging it for 10 minutes, and then restarting it with the toner re-seated. Hold the button again for about 15 seconds

If you're dealing with "Toner Empty" or "Replace Toner" errors on your Samsung ML-2165 unplugging it for 10 minutes