| Error Message | Likely Cause | Free Solution | | :--- | :--- | :--- | | "No device found" | Missing or incorrect USB driver | Download Zadig or FTDI clean drivers. | | "Write verify failed" | Card is LoCo but writer set to HiCo | Use correct card type or switch coercivity. | | "Junk characters on read" | Dirty magnetic head | Open device, clean head with isopropyl alcohol. | | "Track 3 read only" | Card is a pre-encoded financial card | Track 3 is often write-protected. Use a blank card. |
The Mag Card Write Read Utility Program is available for free download from various sources. Here are a few options: Mag Card Write Read Utility Program Free Download
Always use the "Verify" or "Read" function immediately after writing to ensure the encoding was successful. | Error Message | Likely Cause | Free