https://community.usa.canon.com/t5/Office-Printers/Serial-Number/m-p/163074#M3773 <P>Hi, ervd1949!</P><P><BR />Welcome to the Canon Forums! The Forums aren't intended for immediate assistance. If your question is of an urgent nature, please feel free to <FONT color="#0000FF"><A href="http://bit.ly/ContactCanon" target="_blank">CONTACT US</A></FONT> either by phone during business hours or email 24 hours a day!</P><P>&nbsp;</P><P>Have a great day!</P> Sat, 30 Jan 2016 14:53:12 GMT Tara_N 2016-01-30T14:53:12Z https://community.usa.canon.com/t5/Office-Printers/Serial-Number/m-p/163073#M3772 <P>Trying to download the lastest firmware update for my MF8580CDW printer and canon won't recognize the serial number. Tech support gave me a replacement number <SPAN>[Mod note: Removed per </SPAN><FONT color="#0000FF"><A href="https://community.usa.canon.com/t5/Forum-Info/Forum-Guidelines/m-p/15" target="_blank"><STRONG>FORUM GUIDELINES</STRONG></A></FONT><SPAN>]</SPAN> and I get the same results: serial number not recognized.&nbsp;</P> Sat, 30 Jan 2016 14:52:01 GMT https://community.usa.canon.com/t5/Office-Printers/Serial-Number/m-p/163073#M3772 ervd1949 2016-01-30T14:52:01Z https://community.usa.canon.com/t5/Office-Printers/Serial-Number/m-p/163074#M3773 <P>Hi, ervd1949!</P><P><BR />Welcome to the Canon Forums! The Forums aren't intended for immediate assistance. If your question is of an urgent nature, please feel free to <FONT color="#0000FF"><A href="http://bit.ly/ContactCanon" target="_blank">CONTACT US</A></FONT> either by phone during business hours or email 24 hours a day!</P><P>&nbsp;</P><P>Have a great day!</P> Sat, 30 Jan 2016 14:53:12 GMT https://community.usa.canon.com/t5/Office-Printers/Serial-Number/m-p/163074#M3773 Tara_N 2016-01-30T14:53:12Z