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Using a corrupted, modified, or incorrect version of the software can permanently corrupt your printer's mainboard firmware, rendering the machine completely useless ("bricked"). Supported Canon Printer Models service tool v4720 download link
Version 4720 is specifically required for newer Canon PIXMA and MAXIFY models. Using an older version (like V3400) on a modern printer can permanently lock the device's service mode. Common compatible models include: G1000, G2000, G3000, and G4000 series. MG Series: MG24XX, MG25XX, MG29XX, and MG30XX. E Series: E400, E410, and E470. TR Series: PIXMA TR4720. How to Download Service Tool V4720 The tool's interface, while basic, provides access to
TestCopy Forum : A known community source where the file is hosted in their file exchange. The tool's interface