Install the latest software from the MultiECUScan download page.
After the first year, users can continue using their current version indefinitely but must pay the 50 EUR fee again for another year of updates. Multiecuscan 5.2 Key Features
: This is the "full" version. It unlocks all modules, allows for PROXI alignment (essential if you add new hardware to your car), and includes one year of free updates.
Even with a full license key, the software is only as good as your interface. For version 5.2, you generally need:
Server Online 
