: Widely cited as the most compatible version for the MG2400 and MG2500 series. Service Tool V4905 : A newer version often used for more recent Pixma models. Important Safety and Usage Tips
Turn off your printer using its physical Power button to save the new mainboard settings. Turn it back on normally. Troubleshooting Common Service Tool Errors
This is the most crucial step. The Service Tool cannot communicate with the printer in its normal operating mode. You must manually activate the hidden "Service Mode" using the printer's physical buttons. canon mg2540s service tool
The is not a piece of software you install for fun. It is a rescue operation tool for a printer that Canon designed to expire prematurely. While it is risky and requires technical patience, it is currently the only way to revive a bricked MG2540s showing error 5B00.
: Release the Power button. The power light should blink and then stay steady green, indicating the printer is in Service Mode. Step 2: Using the Service Tool Software : Widely cited as the most compatible version
Using the service tool is only half the solution. To truly fix the MG2540s, you should physically clean the waste ink pad.
: Clears the 5B00 error, changing the counter back to 0%. Turn it back on normally
Note: This error occurs because sponge pads inside the printer (which absorb waste ink during cleaning cycles) are calculated to be full. Resetting the counter electronically is only half the fix; the physical pads should ideally be cleaned or replaced.