To create fix firmware reset for Samsung printers
ML-1860 ML-1861 ML-1865 ML-1866 ML-1867 
need to know  printer series (SN)     CRUM serie   and  firmware version

This information can be found by printing the reports of the printer (same like ML2165)
Configuration  and Supplies Information

1. Hold the button PRINT SCREEN / WPS (above the power button) for about 10 seconds until the LED flashes once then leave.
Print configuration report which appears SERIAL NUMBER and VERSION FIRMWARE
2. Hold button again PRINT SCREEN / WPS for approximately 15 seconds until the LED stay green, then leave. Print Supplies Information which appears CRUM series

In the 2nd part (min 2:47 to 6:43) can be seen
– How simple it is to install firmware reset fix sent by us
– Working cartridge without chip (covered with tape or taken out)
– Counters reset to 100% after each stop/ start the printer.

After reset is  necessary only refill toner cartridge
Video refill, disassembly, cleaning cartridge MLT-D1042
https://www.ereset.com/reincarcare-refill-cartus-mlt-d1042/