How do I flash my Ramps 1.4? (1 reply)

My Smartrap is almost finished and is looking pretty good. But now I have hit the step in the build that I have been fearing, programming.

How do I flash my Ramps 1.4 for my smartrap .4.9 and where do I get the files to flash it?

I'm completely lost when it comes to this stuff so as much help as possible is very much appreciated.

Thanks,
Griffin