The "Resetter" or "Adjustment Program" is a piece of service software used by technicians. When you search for a reset for the L3050 or L3070, you are looking for a tool to access the printer's EEPROM (the memory chip).
: Click on "Particular adjustment mode" .
– Filename example: AdjProg_Ver_1.0.0_Epson_L3050_L3070.exe – Obtained from printer parts websites, service centers, or forums (do not trust random executables – scan with antivirus)