If you lose power during the EEPROM write process, or if you click the wrong button (e.g., "Clear EEPROM" without a backup), your printer may become an expensive paperweight.
The Canon Service Tool (often abbreviated as ST) is a proprietary utility software used by Canon service centers. The V5510 iteration is a widely sought-after version because it bridges the gap between older models and some of the newer "G" and "TS" series printers. canon service tool v5510
Unlike the standard driver software, the Service Tool communicates directly with the printer’s firmware (EEPROM) to reset internal counters and perform maintenance tasks that are otherwise locked to the user. If you lose power during the EEPROM write
When you launch the Canon Service Tool V5510, you are greeted with a simple, utilitarian interface. Despite its plain appearance, it packs powerful features: Unlike the standard driver software, the Service Tool
This indicates that the tool cannot write to the EEPROM.