A firmware reset may be required on an Epson printer when 3rd party cartridges are no longer recognized by the machine. Many users have experienced an issue where their non-Epson ink cartridges failed to be detected by the Epson printer after a firmware update. The solution is to downgrade the Epson printer’s firmware. Doing so will re-enable the printer to recognize 3rd party ink cartridges. The Epson printer firmware reset guidance given below.