A permanent hardware fix involves shorting pins 1 and 4 of the 93c66 chip on the printer’s internal board.
Patched firmware (like version V1.01.00.60 ) is uploaded to the printer via USB. Download Reset Samsung 1640 rar
Some Samsung printers allow a "hard reset" or "data setup" through a specific button sequence (e.g., Menu → Down → Left → Right → OK ...). ⚠️ Critical Security & Safety Warning A permanent hardware fix involves shorting pins 1
There are three main ways users typically "reset" this model: Download Reset Samsung 1640 rar