WF-3720 - Activation code unrecognized after inputting in the designated box

Troubleshooting Epson wf 3720 Printer Not Recognizing 3rd Party Ink Cartridges​


Entering Activation Key Correctly​


My Epson wf 3720 printer isn't recognizing 3rd party ink cartridges after giving in to a firmware update reminder. I purchased a $30 code, downloaded the firmware, ran License, attempted to enter the code but received a message that it is not recognized. What should I do now?

Difficulty Entering Recovery Code​


I copied and pasted the Activation Key into the Recovery code box but received a message that the recovery code cannot be recognized. Am I putting it in the wrong spot? This is all new to me.

Request for Screenshots​

I am unable to take a screenshot as it only makes a chime noise every time I try. I resized a photo, but it is still too big. I will try again.

Connection to Wifi​


Does the printer need to be connected to wifi at this point? I have the USB connected to my laptop but cannot connect it to wifi at home due to the error mode.

Guidance on Activation Process​


Click on the Activate Online button instead of entering the key into the Recovery window. I am confused; where can I find this button?

Request for Detailed Instructions​

I am lost; I need detailed instructions on the activation process. Where can I find the Activate Online button?

Request for Assistance with License.exe Utility​


When I try to activate online, the window is empty. My printer is still in error mode and not connected to wifi. Any suggestions on what to do next?

Suggestions for Uploading Firmware​

Upload the firmware to the printer in normal mode without putting it in Program Update mode. The process may stall at 70-80%, which is normal. The printer will power off after blinking for 5-15 minutes. Power it back on, and the chipless firmware should be installed.

Success in Activating Printer​


That did the trick! Thank you so much for your help. My printer is now up and running again.

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