SUP M3 custom firmware can be tailored to specific applications, removing unnecessary code and features. This not only reduces the firmware's footprint but also allows for a more streamlined user experience.

on the main partition, with subfolders for each console (e.g., for Game Boy). or specific hotkey shortcuts for this custom firmware?

Because these are exclusive , you won't find them on Archive.org or standard ROM sites. You must go deep.

: You can organize your game library with box art, custom themes, and clean menu layouts.