OK good news.
As I said earlier my purpose is to use the RVOSD protocol, and now it seems the firmware even if received by the serial port is not reflected in the LCD as with other protocols that have proven successful, Mavlink, Gps_Telemetry something You must be wrong.
Unfortunately I do not have enough knowledge to being able to study, so thanks to his great patience Rangarid and we solved everything that happens.
Likewise I appreciate your attention.
Cheers