If you need to program a new key using VCDS, you first need the 4 or 5-digit Secret Key Code (SKC). This tool can extract that PIN from the Immobilizer.
Looking for a reliable way to read and write EEPROM data for your VAG vehicle? The VAG EEPROM Programmer v1.20
The version 1.20 includes several updates for improved stability and a larger interface window compared to earlier versions.
Always keep a backup of your original EEPROM dump before writing anything. One click can turn a running car into a paperweight.