Samsung ML-1861W, ML-1866W fix firmware (chipless / sin chip)

ModelFirmware version






To create a fix firmware you need to send the data of your printer:

1. Model printer
2. Firmware version
2. Serial number of printer
2. Number CRUM of chip

To check printer reports (in order not to make a mistake in the data) we recommend use the free program PC_INFO_TO0L, it has the button to save reports, you can send this report to us


1. Connect the printer to the computer and turn on.
    - Wait until the printer is ready and wait for Windows to finish searching the drivers.
2. Run the file download_1.bat or drag and drop the file P_NU_XXXXXXXXXXXXXXXXX_ML1866W_V3.03.01.01.hd on usbprns2.exe by mouse
    - Wait for the printer to program done (1-2 minutes) (after the printer is automatical reboot).
3. After flashing, you need delete (glue) the chip and never not install other chips.