In internal memory go to Android/obb and create a folder called com.tomtom.gplay.navapp, after this copy main.1646522.com.tomtom.gplay.navapp.obb to this folder, after this install Tomtom_Go_Navigazione_e_Traffico_v1.17_Build_2117_Patched_By_DFoX_URET.apk and after all this start app and download desired map ;)