Release the button while continuing to hold the Power button.
Canon Service Tool v5204 (ST v5204) is a Windows-based maintenance/reset utility widely circulated in repair communities since about mid-2018. It’s used to place supported Canon inkjet printers into service mode, read/write EEPROM, reset waste-ink (absorber) counters, run various maintenance operations (cleaning cycles, platen/chassis movements), and dump or restore firmware-related values. The tool is not an official consumer download from Canon; distributions are typically packaged and redistributed by third parties, sold on small webshops, shared on forums, or hosted on file-sharing links. canon service tool v5204
While continuing to hold the Power button, . Release the button while continuing to hold the Power button
MODELLER (copyright © 1989-2026 Andrej Sali) is
maintained by Ben Webb
at the Departments of Biopharmaceutical Sciences and Pharmaceutical Chemistry,
and California Institute for Quantitative Biomedical Research, Mission Bay
Byers Hall, University of California San Francisco, San Francisco,
CA 94143, USA.
Any selling or distribution of the program or its parts, original or modified,
is prohibited without a written permission from Andrej Sali.
This file last modified: Thu Jan 29 12:28:54 PST 2026.