Older versions like "231" were often on Russian and Eastern European car-tuning forums (e.g., from around 2008–2012). Unlike later versions that required a paid hardware dongle, version 231 was "liberated" software — but often came bundled with viruses or keyloggers.
and provides the precise hexadecimal location for mileage data on the vehicle's computer program. 1. Setup & Installation tachosoft mileage calculator 231