To answer you : yes it is a 1024*600 résolution screen - only landscape. A android 4.4.2 autoradio

I have tried like you said, changing sys.txt :

and

Ui :

Nothing change. The résolution stay to big.

Before i unfotunely delete an iGO version wich work fine on it, nos problem.

Now the only one that i can use is igo_primo_9.6.7.2356_235654_com.navngo.igo.javaclient and to big résolution

With all 9.6.29 version, it say no 1200*600 résolution support.

I thank you at all.