VAG EEPROM Programmer V1.20 is most effective on "K-Line" vehicles, generally produced between 1996 and 2005. This includes: Golf MK4, Bora, Passat B5/B5.5, Polo 6N. Audi: A3 (8L), A4 (B5/B6), A6 (C5), TT (8N). Seat/Skoda: Leon MK1, Ibiza, Octavia MK1. Important Safety Warning
To use VAG EEPROM Programmer V1.20, you need a compatible interface to bridge your PC and the vehicle's OBD-II port.
Open the software and navigate to the 'Settings' to select the correct COM port.
Retrieve the 4-digit PIN (Secret Key Code) required for programming new keys or matching immobilizer components.
The software typically requires the cable to be assigned to COM1 through COM4 in the Windows Device Manager.