Thanks I've tried to do what have you suggest and seems that work ... now Im not sure because I've the display that is half with all the pixel busy and the other half with pixel free. ... I think that is necessary and hardware reset 
...
I've note one things when I've connected the display, I've seen that the virtual wire library work's bad that before ... so due the fact Im not able to reach the answer ... is possible ?
For the moment many thanks for your help,
Andrea