A "patched" file is often a dump from a "clean" or "chipless" version of the same printer model.
Because I cannot host direct files, here are the trusted sources: eeprom dump epson patched
: Modified firmware (often called "patched" firmware) is flashed so the printer no longer requires expensive chipped cartridges. A "patched" file is often a dump from
Appendix (recommended artifacts to include when producing forensic reports): eeprom dump epson patched