Once the printer reboots itself, on the toner cartridge. The printer should now show 100% toner regardless of the actual level. 4. Alternative: Hardware Chip Reset

With the data in hand, he downloaded a "fix" file—a custom .hd firmware designed for his specific serial number. He connected the printer via USB and dragged the firmware file onto a small program called usbprns2.exe .

A: Officially, the Samsung firmware tools are Windows-only. Some users have success using Windows virtual machines (VirtualBox) with USB passthrough, but it is risky. Use a native Windows PC for best results.