Solved, before approved in the forum. It's been a driver issue on my notebook. Installed everything on another notebook and it worked.

If someone else has the same problem: Either you can fix the driver problem or change the notebook (or whatever you use)

By the way: outstanding support by @Ugnius!

Hi there, tried to install VersaTune on my Mazda MX-5 ND (MK4). After updating Versa Tuner to latest version, that supports my ECU, i get following error: not enough additional bytes in response I#m using the suggested OBDLink SX cable. Are there special settings for the com-port, that might cause t...