Mercedes sds scanner star diagnosis C4 software has been updated to the version 2015.7. Mercedes C4 Mux works with MB SD Connect Compact C4 and supports the latest Mercedes Benz car and truck models. Do you succeed do MB SD Connect Compact C4 update the firmware? Below OBD2Tuning sharing Mercedes C4 Mux MB SD Connect Compact C4 Star diagnosis Update error report solution.