The SX 125 is part of Epson’s older “SX” multi-function series. Many generic adjustment programs claim to support it, but you need the for the SX 125 (sometimes listed as SX125 or SX 125). Look for a file named something like:

is a specialized tool used to resolve "Service Required" errors when the printer's internal waste ink pads reach their software-defined limit. Core Functions for the SX125

If you have decided to proceed with using the Adjustment Program to reset the waste ink counter, follow these steps carefully.