Sup M3 Custom Firmware Exclusive -

Stock firmware on the M3 is notoriously bad. It uses a decade-old version of OpenDingux, has a 2-second input delay in CPS2 arcade games, and often corrupts save files when the battery hits 30%.

Leo tried to slide the power switch to 'off,' but the button was fused solid. The screen grew brighter, a blinding white light bleeding from the edges of the LCD. He saw a reflection in the glass—not his own face, but a low-res rendering of a player sitting in a room that looked exactly like his, dated 1989. The exclusive firmware wasn't an upgrade. It was a bridge. sup m3 custom firmware exclusive

The process takes about 12 minutes and involves a terrifying 30 seconds where the screen goes completely black. That’s the bootloader being rewritten. Stock firmware on the M3 is notoriously bad

While the is stable, users report a few quirks: The screen grew brighter, a blinding white light