I HAVE GE256X64B FIRMWARE VERSION F093  2 UNIT

OLED interface Asynchronous baud rate 115200 bps  the jumper J0,J1 is Shot

Oled Can Show Picture and Character.  

Oled Disply Everything is Work Good .

After 1-2 day not Work SBusy pin low always.

no change  Display off.

Can't Show Everything. 

I am Check Serial Port is ok.

vcc=3.3v 

gnd=ok.

Help me please.

Thank you from answer.