Sup M3 Custom FirmwareIf you have a dusty SUP M3 sitting in a drawer, pull it out, grab an SD card, and give it a second life. The retro gaming community has kept this device alive through custom firmware, and now you can too. Originally developed for the Dingoo A320, a lighter version was ported to the SUP M3. sup m3 custom firmware is a budget-friendly retro handheld that punches above its $15–$20 price tag. While the stock experience is decent for a "famiclone," enthusiasts have discovered that you can significantly enhance performance and emulator support by installing Custom Firmware (CFW) If you have a dusty SUP M3 sitting |