If your printer is stuck on a "Prepare Paper" or "No Paper" message even when the tray is full: Flex and Fan
The tool provides specialized service operations that typically require a physical or Dongle and a hardware-activated smart card: samsung tool 191
This utility was designed to provide deep-level access to Samsung mobile devices for maintenance and repair. Its primary functions include: If your printer is stuck on a "Prepare
If you are a technician or developer looking for legitimate repair or flashing solutions for Samsung devices, I recommend using official tools such as: samsung tool 191