A word of caution about updating Epson firmware and using non-Epson ink: see
here, for example.
I had an Epson Artisan printer bricked by a firmware update. I had third party ink installed and the printer refused to "recognize" the cartridge after the firmware update (as in,
immediately after the firmware update). I replaced the ink with all-Epson cartridges and it
still refused to print. I had to throw away the printer - I could not roll-back the firmware.
So. Put Epson ink in your printer before updating firmware.