This paper discusses the "firmware reset" method—a software-based approach to reprogram the printer’s internal logic—allowing the use of refilled or third-party toner cartridges without the need to replace the chip on every cartridge.

An 11-digit number tied to the current toner cartridge chip. Risks of Modified Firmware

the power cable from the back of the device and the wall outlet. Disconnect the USB cable if it is attached to a computer.

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Check the sticker on the back or bottom of your printer. Ensure it matches ML-2160, ML-2165, ML-2160W, or ML-2165W.

if printer is not recognized.

On your Windows desktop, click and drag the .hd firmware file directly on top of the usbprns2.exe icon, then release the mouse click.

What is the currently installed on your printer? Is your machine a standard model or a wireless (W) model ?

: On your PC, you typically drag the firmware file (often with an extension) onto a specialized USB executable tool (like usbprns2.exe Wait for Reboot

A 11-digit serial number belonging strictly to the chip currently inside your toner cartridge. How to Print the Reports