Firmware can be updated using the following projector ports:
USB-A (using USB memory stick)
USB-B using a computer and USB cable
Wired LAN using EasyMP Network Updater or Epson Projector Management version 5.2 or higher. Applications and manuals downloadable from the website.
Once this firmware uploaded in your projector, please do not downgrade it to any previous version otherwise projector may malfunction.