Dump eeprom with a new printer Canon Pixma MG6340, in the presence of the programmer and the soldering iron , helps flush the MG6440 oshibke 5B00. More details about all the process of looking at the following link: http://printblog.com.ua/remont-canon/canon-pixma-mg5540-sbros-oshibki-5b00-sbros-schetchika-pampersa.html