This is the most critical step. The MG2540S is a "new generation" Canon printer. Older tools (like Service Tool v3200, v3400, or v3600) generally with the "S" series of the MG2500 line.
. The Power light should blink and then stay lit, indicating the printer is in Service Mode. Using the Software canon mg2540s service tool
: Ensure you are using a high-quality USB cable. If the PC does not recognize the printer as "CanonDevice," the printer is likely not in the correct Service Mode. This is the most critical step