Many generic adjustment programs exist. The “352” in the version number is critical. Using the wrong version (e.g., from an L210 or L800) will fail to communicate with your printer’s specific mainboard chipset or could cause a permanent brick.
: The program issued its final command: "Please turn off the printer." Elias flipped the switch, waited for the silence to settle, and then turned it back on. Epson Adjustment Program Ver.1.0.6 352