Loading font and LED pattern files is an easy endeavor with the Mega Sg. Attached in this document is a .zip file with a recommended folder/file structure to put on your SD card for using these files on your Mega Sg.
Unzip the .zip file and copy the files to your FAT32/MS-DOS FAT formatted SD card
Copy font and LED pattern files to their respective folders
Access all the files with the in game menu on the Mega Sg (access the in-game menu by pressing DOWN & SELECT at anytime)