If you attempt to use an outdated or counterfeit version of the Service Tool on a new printer model, or if you select the wrong settings inside the software, you can corrupt the printer's EEPROM (motherboard memory). This is often referred to as "bricking" the printer, rendering it permanently unbootable.
Service Tool v5103 is widely available on "warez" and file-sharing sites. Because it is an executable file ( exe ), it is a common vector for malware. canon service tools v5103 new