Enable Epson Open Platform so that you can use the device from the authentication system.
Enter the printer's IP address into a browser to access Web Config.
Enter the printer's IP address from a computer that is connected to the same network as the printer.
You can check the IP address of the printer from the following menu.
Settings > General Settings > Network Settings > Network Status > Wired LAN/Wi-Fi Status
Enter the administrator password to log in as an administrator.
Select in the following order.
Epson Open Platform tab > Product Key or License Key
Enter a value for each item.
Click Next.
A confirmation message is displayed.
Click OK.
The printer is updated.