Canon Service Tool 4905 ((link)) -

Clears stored data to restore the printer to factory-like logical states. Deep Cleaning & Nozzle Checks:

There are two primary scenarios where this tool becomes indispensable: canon service tool 4905

Before downloading the Canon Service Tool 4905 from a random forum or torrent site, you must understand the risks. Clears stored data to restore the printer to

This tool is generally compatible with Canon models released before July 2016. : G1000, G2000, G3000. : G1000, G2000, G3000

The primary function of version 4905 is to reset the waste ink counter. Every Canon inkjet printer has an internal “waste ink absorber” (a sponge pad) that catches ink used during cleaning cycles. The printer tracks how much ink has been flushed into this pad. Once the counter reaches a pre-set limit, the printer locks down permanently to prevent overflow—even if the sponge is not actually full.

: Includes deep cleaning and nozzle test options.