is a highly specialized, lightweight automotive software tool designed to read, write, and modify non-volatile EEPROM memory inside Volkswagen Group (VAG) vehicles. Targeting classics spanning from 1997 to 2004 —including the Volkswagen Golf Mk4, Passat B5, Audi A3/A4 B5, Skoda Octavia A4, and Seat Leon Mk1—this utility serves as an accessible bridge for advanced module configuration. Unlike complex diagnostic dealer equipment, version 1.20 provides a streamlined, extended window interface to extract security data, clear crash histories, and resolve immobilization roadblocks over simple serial connections. Core Capabilities of Version 1.20
Immobilizer/Key Data
The program does not utilize proprietary, high-end hex interfaces. Instead, it relies on a standard built with an authentic FTDI FT232RL or CH340 serial chip. Operating System Compatibility vag eeprom programmer 1.20
The cable must be assigned to virtual COM1, COM2, COM3, or COM4 in the Windows Device Manager. The software cannot address ports higher than COM4. Core Capabilities of Version 1
Compared to older versions like the widely distributed V1.19g, VAG EEPROM Programmer 1.20 introduces crucial software stability, visibility, and system compatibility changes: The software cannot address ports higher than COM4