If You cant put printer in service mode - that means printer has damaged EEPROM and it must be reprogrammed by hardware resetter. Feel Free to Message via eBay Careful Please Some Seller Sell Modified ST5510 That Is Not Original ST5510 Ask Any Question before buy *This software is sent as a Download* *You will receive a download link after purchase*Warning! This utility Canon ST5510 can be used when printer is put in Service Mode only. You Can check our review before buy.Canon Service Tool V5510/Canon ST5510 (Not Fake Ver.) Full KeygenCanon Service Mode Tool Version 5.510 is a service program for Canon printers, the program allows you to reset the diaper counter (absorber) and other functionsFeatures of the program:The program works only via USB on OS: Windows (No MAC) Interface language: EnglishAttention! This Program is With Keygen 2020 (latest version)Attention Please !!This Is With Keygen You Can Put Your Information. Yes You Can Buy This version at Low Price That is fake ST5306 Be aware of that. Item: 133666701769 RESET CANON ST v5510, Canon Service tool v.5510 Full Keygen Emailed (Not fake).