Because this tool interacts with hardware at a low level, some antivirus programs flag it as a "False Positive."

Keep holding the Power button and (or 6 times for certain G-series models). With each press, the alarm and power LEDs will alternate. Release both buttons simultaneously.

Remember: If a software solution seems too good to be free, the "price" is usually your data or your device.

⚠️ If your printer's green light blinks indefinitely, or if you get a solid orange light, the printer failed to enter Service Mode. Do not attempt to force the software to run. Running the Service Tool while the printer is in an unstable state can permanently corrupt your printer's motherboard (Main IC), bricking the device completely. How to Use Canon Service Tool V5103 to Reset Waste Ink

Turn off your printer, wait 10 seconds, and turn it back on normally. The error should now be gone. Crucial Safety Warnings and Troubleshooting

You are trying to connect via a Wi-Fi or network connection instead of a physical USB cable.

Pixma G-Series: G1000, G2000, G3000, G4000, G1010, G2010, G3010, G4010. Pixma MG-Series: MG2500, MG3500, MG5500, MG5600, MG5700. Pixma TS-Series: TS5000, TS8000, TS9000. How to Use Canon Service Tool V5103

Compatible with older and mid-range PIXMA series (e.g., G-series, MG-series, TS-series). Review: Pros & Cons

TS5000, TS6000, TS8000, TS9000, TS5120, TS6120.

While compatibility varies, V5103 is widely cited for use with: