Epson firmware key illustrated on a laptop connected to a printer

Epson firmware key

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Use this digital key with the free program to downgrade firmware or install chipless firmware on a supported Epson printer. Available options depend on your model.

In stock

Category: SKU: fw

Which firmware option do you need?

The available firmware functions depend on your printer model. The same firmware key product is used for either supported operation.

Firmware downgrade

After an update, a printer may stop recognizing refillable cartridges or a continuous ink supply system (CISS). If your model supports downgrading, the program can install a supported earlier firmware version. This does not install chipless firmware.

Chipless firmware

On selected Epson models, the program can install a chipless firmware version so the printer can work without cartridge chips. Check that Chipless Firmware is listed for your exact model before choosing this option.

How it works

Download the program

Download the program for free, install it and check the available firmware functions for your printer model.

Connect and check

Connect the printer by USB. Use Printer Data → Check Firmware Version to see the installed version, then compare it with the options offered for your model.

Choose and enter the key

In Control → Firmware → Change firmware version, select the supported option you need. Enter your firmware key when the program asks for it and follow the on-screen instructions.

Before you buy

  • Check the available function for your exact model. A firmware downgrade and a chipless installation are different operations; your model may support one, both or neither.
  • If the printer no longer recognizes cartridges, check that the cartridges or CISS chips are not damaged. A firmware change cannot repair faulty chips.
  • Firmware changes require a USB connection and an internet connection on the computer. Back up the printer’s EEPROM in the program when that function is available.
  • After payment is confirmed, your key is sent to the email address entered at checkout. If you are unsure which operation applies, contact us before buying.

If an update removed a previously installed chipless firmware version, a standard downgrade will not restore chipless operation. Confirm that Chipless Firmware is available for your model. Changing firmware also does not reset the waste ink counter; that requires a separate reset key.

Video guides

Firmware downgrade

These examples show the downgrade procedure. The available firmware and controls can differ by model and program version.

Firmware downgrade in regular mode

Firmware downgrade in service mode

Chipless firmware installation

If your model supports chipless firmware, choose Firmware versions with disabled ink cartridges (chipless) in the program.

Questions about the firmware key

Do both firmware options work on every Epson printer?

No. Available operations depend on the exact model. Check its supported functions before buying.

Can a downgrade restore chipless firmware after an update?

No. A standard downgrade installs a supported standard firmware version. If you need chipless operation, check that your model supports Chipless Firmware and select that option in the program.

How and when will I receive the key?

We send it to the email address you provide at checkout after your payment is confirmed. If you created an account, you can also find it in your order details.

Will this key reset the waste ink counter?

No. Firmware changes and waste ink counter resets are separate operations. For a counter reset, see the waste ink pad counter reset key.

What if I am unsure whether firmware caused the cartridge error?

Contact us with your exact printer model, current firmware version and the error you see. We can help you identify the relevant option before you buy.