Canon printer firmware package associated with error code E484, stored as a RAR archive of about 40.5 MB. The name gives only the brand and the error code, not the printer model, so the archive contents should be inspected before use. On Canon inkjets E-codes usually relate to printhead or cartridge recognition problems, and firmware or service tools are sometimes used in the recovery procedure. Confirm the files target your exact printer model and keep a backup of existing data before flashing anything.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →