The library files containing the logic for your vehicle. You can choose Lite (for coding only) or Full (for firmware flashing).

Are you planning or full ECU firmware flashing ?

: The core application executable file.

Note: I assume you mean Esys 3.40, the Windows application used for BMW/mini/Group diagnostics, coding, and engineering functions. If you meant a different product, tell me and I’ll adjust.

A: Most launchers "patch" Esys memory to remove tokens. This looks like a crack. Restore the file, add exclusion, reinstall.