Thanks for the information.
I am a beginner, and I do not understand much about Arduino or C. In the readme file I read this:
I strongly suggest that you install Jenn Holt's firmware if you got this display as it fixes a lot of bugs with the original firmware.
Strange symbols will no longer appear while writing commands to the screen, the backlight will not flicker and
contrast will work properly (odd that this even was a problem as it has nothing to do with the microcontroller).
In addition, writing to the screen (text/graphics) is a lot faster.
May be these questions are very stupid, but, some one can explain me what it means. What type of firmware is this to install? How to do it?
Thanks in advance,