This usually means the printer isn't in Service Mode or the USB connection is loose. Error 005:
: This version supports a wide range of PIXMA and MAXIFY models, including: G-Series : G1000, G2000, G3000, G4000. TS-Series : TS3100, TS5000, TS6100, TS8100, TS9100. IB/MB-Series : IB4000, MB2100, MB5400. canon service tool v5306 exclusive
: The tool will not work unless the printer is manually put into "Service Mode" first (typically via a specific sequence of the Power and Stop buttons). This usually means the printer isn't in Service
Are you currently seeing a on your printer, or are you looking for the Service Mode button sequence for a specific model? including: G-Series : G1000