nds-bootstrap is a homebrew application used by TWiLight Menu++ to load DS cartridge dumps and DS-mode homebrew from the Nintendo DSi / 3DS SD card.

There is also a version for flashcards called B4DS, intended for homebrew-only flashcards and flashcards with low compatibility.


To see if a game is compatible with nds-bootstrap, check the compatibility list:

For the best compatibility with B4DS, we recommend getting a DS Memory Expansion Pak.


Hold , , , and  for 2 seconds to return to TWiLight Menu++.

Press , , START, and SELECT to reset the game.

Hold , , , and  for 2 seconds to create a RAM dump.

Hold , , , and  for 1 second to swap the screens.


nds-bootstrap can use Action Replay cheats via a usrcheat.dat database, which needs to be in sd:/_nds/TWiLightMenu/extras. Once the database is there, you can select which cheats to use from a game's per-game settings menu in TWiLight Menu++.

DeadSkullzJr's cheat database is recommended as it's the largest and most up to date:

Alternatively, if you would like to make one yourself, you can use use R4CEE on a computer:

Keep in mind that nds-bootstrap's E-type cheat implementation is unstable and as a result, your code may or may not work. This is not a fault of the database, and we hope to get this issue fixed in nds-bootstrap soon.