To start create fix firmware reset for Samsung Xpress
SL  M 2020 / 2023 / 2024 /2026 / 2027 / 2029
SL M 2020W / 2023W / 2024W / 2026W / 2027W / 2029W
necessary to know  Machine Serial Number   CRUM serie  and firmware version

This information can be found by printing the reports of the printer:
Configuration   and Supplies Information

1. Hold the button PRINT SCREEN / WPS (above the power button) for about 10 seconds until the LED flashes once then leave.
Print configuration report which appears SERIAL NUMBER and VERSION FIRMWARE
2. Hold button again PRINT SCREEN / WPS for approximately 15 seconds until the LED stay green, then leave. Print Supplies Information which appears CRUM series

For printers that do NOT allow print reports due to the chip reached 0%
complete  quick order form with Serial Number from the label on the back of the printer
and crum series 22222222222

Advantages reset:
– the printer does not consider limiting the chip to 1000 pages!
– the investment is long term and worth it because the reset is made only once and is permanent (forever)!
– allows refilling of the original cartridges (fully loaded one cartridge allows printing about 2000 pages)
– printers counters will always display 100%
– the guarantee is kept, because together with the reset program (fixed firmware reset),
we also offer original firmware needed in case of appeal to the guarantee