The Adjustment Program writes directly to the firmware. If the process is interrupted (e.g., a power cut or USB disconnection) or if you use a program designed for a different model (e.g., trying an L3150 program on an L3050), you could "brick" your printer, rendering it permanently unusable.
The Adjustment Program resets the digital counter , but it does not physically replace the ink pad . If your printer has actually printed thousands of pages, the pad may indeed be near saturation. Resetting the counter without checking the pad can lead to ink leaking out of the bottom of the printer, causing damage to your furniture or the printer's internal circuit boards. epson adjustment program l3050