I have a problem with samsung ml 1640.After changing a cartidge,printer gives me an error light.I was printed test page on the printer and it tells me that the toner is invalid,but,I put an genuine samsung cartidge mlt-108 in the printer.I tried to update firmware from samsung site,and i download and upgrade to newiest firmware for ml 1640.But nothing happened with the printer.I still have an error light because of invalid cartridge.Does anyone have a solution for this problem?
Thank you
Thank you
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