Modifying the original firmware of a printer directly violates the manufacturer's terms of service and voids the device's warranty.
Flashing unverified firmware permanently trips the Knox warranty void fuse (changing the status from 0x0 to 0x1). Once tripped, this cannot be reversed. It permanently disables secure corporate features, Samsung Pay, and Samsung Pass, while instantly voiding any remaining manufacturer warranty. Safe and Official Ways to Repair Samsung Firmware Samsung Firmware Fix Generator V
Connect the computer to the printer using a high-quality USB cable under 1.5 meters in length. Never attempt to flash firmware over a Wi-Fi or wireless connection, as packet drops will break the device. Modifying the original firmware of a printer directly