Epson EP-879AB cartridges not recognized after a firmware update
Did your Epson EP-879AB stop recognizing cartridges after a firmware update? If an earlier firmware version is available for your printer, a downgrade may help restore recognition. First, check that the cartridges are seated correctly and their contacts and chips are clean and undamaged.
Why cartridges may stop being recognized
Some firmware updates can affect cartridges that worked before the update. A printer may display a message such as this example; the wording varies by model:
Ink cartridges cannot be recognized. Remove and reinstall the cartridges correctly or replace them. Epson recommends the genuine Epson cartridges listed above. Click [How to] for instructions on ink cartridge installation.
If the warning began after an update and the cartridges and contacts are in good condition, installing an earlier available firmware version may restore recognition. A firmware change cannot repair a faulty cartridge chip or a physical connection problem.
Ready to check your firmware options?
Download the program for free. Check your installed firmware version and the earlier versions offered for your printer before buying a firmware key.
How to downgrade the firmware
Connect and check
Install the program and connect your printer by USB. Open Printer Data → Check Firmware Version to see the current version.
Choose an earlier version
Open Control → Firmware → Change firmware version. Compare the offered versions with the one installed and follow the program’s instructions for the available downgrade mode.
Enter the key
Use your firmware key when the program asks for it, then follow the on-screen steps until the firmware procedure is complete.
Keep the printer connected by USB and the computer connected to the internet during the procedure. Regular and service modes have different requirements; use the mode offered for your model. See the video guides and firmware key details before starting.