Drop your .nes , .gb , or .gba files into the designated "ROMs" folder.
The cards that come with the SUP M3 are notorious for failing. Upgrade to a 16GB or 32GB card from a reputable brand like SanDisk or Samsung. sup m3 custom firmware
Most stock M3 units don't support save states. CFW allows you to save your progress anywhere in the game—a must-have for difficult retro titles. Drop your
Many CFW builds use optimized versions of RetroArch or standalone emulators that reduce lag and fix audio stuttering. Drop your .nes
