Check r/SublimationPrinting or r/Epson. Look for users who have successfully reset an L5290 and shared a Dropbox or Google Drive link. Cross-reference comments to ensure no one reported malware.
When the printer displays "A printer's ink pad is at the end of its service life," you need a software resetter (Adjustment Program).
When your Epson L5290 displays the error message "The ink pad needs service" "A printer's ink pad is at the end of its service life,"
Epson programs the L5290 firmware with a "Waste Ink Counter." This counter estimates the saturation level of the pads. When the counter reaches approximately 100% (often triggered around 7,000 to 15,000 pages depending on the model configuration), the printer firmware triggers a "Service Required" lockout.