Firmware updat for K8204

hey everybody, one hour ago i installed the new K8204 upgrade and the Z axis works very good, but since the firmware update, non of my Y or X motors work, how can i change this?

Did you use Arduino 1.0.6? Newer versions can’t upload the Marlin V2 correctly.

You can download it from here

thank you, it worked! why doesn’t 1.6 work?

It must be a library issue.
The libraries that come with the Arduino IDE changed between versions.
I read somewhere, that the newest Marlin (from GitHub) now also works with the newer IDE.
But i have’nt tested that by now, because you’d have to make all config changes for the Velleman again with that.