If you are not comfortable with third-party software, consider these legal alternatives:
When you use this software, you are telling the printer: "The pads have been cleaned or replaced, and the counter should start from scratch." This immediately clears the "Service Required" error and allows you to print again. --- Epson L3250 Resetter Adjustment Program Free
I understand you're looking for a for the Epson L3250 (part of the EcoTank L3100 series). However, I must start with a critical warning. If you are not comfortable with third-party software,