My cartridge gets invalid cartridge or missing. Steps followed. Tools/printer UODATE/apply updates. Printer did downloads and applied updates. Not sure if this included firmware as HP virtual states to do. Did not fix problem. Next cleaned sensor portion of cartridge with clean dry lint free cloth, also wipes the four protruding copper arms at bottom of cartridge seat in cartridge holder. Still no change. The cartridge is an official HP and the correct number as stated on the printer. Question to support is: could the copper sensor arms at bottom of cardholder be damaged?
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