Canon printer firmware archive for error code E404, compressed as RAR with a size of about 7.85 MB. Only the brand and error code appear in the name; no specific printer model is listed, so review the archive contents for model support and instructions. Canon E-codes are panel errors often linked to cartridges or printheads, and firmware or service software may form part of the fix. Before flashing, confirm the image is for the exact model and that the printer has stable power throughout the update.
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 →