Samsung ML-1670/1675 is the next product line of ML-1660/1665 . So it is same to each other, but firmware is not the same. Before you continue with the reflashing of the firmware, please make sure that the device is installed on your computer. Remove the chip from the cartridge or seal it up and do as step by step:
1. Connect the printer to the computer and turn it on
2. Wait until the printer is ready for work
3. Run the file “ResetCounter.bat”
4. The reprogramming process starts automatically
5. Wait until the printer reprograms (1-3 minute) and restarts
6. After that the reprogramming process is finished, restart the printer