Samsung Ml 1665 Printer Firmware Reset ((better))

For owners of the workhorse Samsung ML-1665 laser printer, few things are as frustrating as the "Replace Toner" message that refuses to go away, even after you’ve refilled the cartridge or installed a new one. This is the point where many users turn to a drastic solution: a .

Samsung released firmware updates that permanently lock toner chips. To bypass this, you need to downgrade to an older, cracked firmware.

The Samsung ML-1665 must be put into a "Download Mode" to accept new firmware. samsung ml 1665 printer firmware reset

Some firmware versions on the ML-1665 have a hidden reset sequence. Newer updates blocked it.

Some firmware versions require:

After the printer restarts, the firmware reset should have disabled the "End of Life" toner lock. Here is how to verify:

Inside every Samsung toner cartridge (specifically the MLT-D104S model used by the ML-1665) is a small circuit board known as a CRUM (Customer Replaceable Unit Monitor) chip. This chip communicates with the printer, reporting the toner level and, crucially, the "life status" of the cartridge. For owners of the workhorse Samsung ML-1665 laser

The Samsung ML-1665 is a workhorse, but it’s also aging. If you experience any of the following, a firmware reset won’t help: