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Connect to a PC via USB. Drag and drop the specific .hd firmware file onto the usbprns2.exe utility.

Extract the downloaded zip file containing your firmware on your desktop.

After a successful firmware reset, you must to avoid re-locking the printer.

If you own a Samsung monochrome laser printer from the ML-2160 series, you have likely encountered a frustrating reality: automatic firmware updates often disable third-party or refilled toner cartridges. One day your printer works perfectly; the next, it shows a permanent "Non-Samsung Toner" or "Replace Toner" error—even when the cartridge is full.

: Detailed PDF release notes and manual update instructions can be found on Scribd .

After testing multiple sources (including archived Samsung update servers and user forums), the most reliable and safe firmware reset package is hosted on a community-supported archive. – many contain malware.

Press and hold the button (located directly above the power button) for roughly 10 seconds .

: Once in this mode, you can drag and drop an original firmware file (like ML2160_V1.00.01.xx.hd ) onto the usbprns2.exe utility to reflash the device. Firmware Links & Resources

Samsung printers in this series are notoriously strict about toner counting. Unlike older models where a simple chip swap on the cartridge worked, the ML-216x series stores the page count on the , not the cartridge. Once the count hits the limit, the printer locks you out.

Connect the printer directly to your computer using a high-quality . Do not attempt this over Wi-Fi.