No XML file is needed with MaxxECU, that option is there just for debugging/testing.
There has been problems on connecting MaxxECU with USB on some devices, see:
Maxxecu street + RealDash + Lenovo M9 4G - Connectivity / MaxxECU - RealDash Forum
No XML file is needed with MaxxECU, that option is there just for debugging/testing.
There has been problems on connecting MaxxECU with USB on some devices, see:
Maxxecu street + RealDash + Lenovo M9 4G - Connectivity / MaxxECU - RealDash Forum