Hackers know printer repair is frustrating. They hide keyloggers and ransomware inside these tools. Because the Adjustment Program requires USB access to your printer, the malware can jump from your PC to your network.
Adjustment programs (also called resetter tools or service programs) are proprietary Epson service tools intended for authorized technicians. They are used to:
Downloading these tools for free from unofficial sources is risky: epson wfc5790 adjustment program free
For most users, the safest and most reliable route is the WIC Reset Utility.
Assuming you have found a working (or paid) version of the Adjustment Program, here is the exact workflow to fix the "Service Required" error. Hackers know printer repair is frustrating
What you need:
Before you rush to download that "free" .exe file from a random MediaFire link, you need to understand the risk. Downloading these tools for free from unofficial sources
Some free tools force you to downgrade your printer's firmware. Newer Epson firmware blocks third-party maintenance boxes. Once downgraded, your printer might never accept genuine ink again.
Let’s clear up a major misconception immediately. This is not a driver, and it is not firmware. The Adjustment Program (often called a "reset utility" or "service tool") is a diagnostic software used by Epson authorized service centers.