Kyuzumaki has released a new version of his rom editing tool for the DS, excellent for homebrew editing:

Heres whats new:

RomeR v1.0.1.2 Changes:

New simplified settings menu

Default behaviors altered

Can now extract rom icons to png file

Return characters altered to be NDS compliant

Rom trimming & graphical represantation of empty space

(This is the safe method but be aware if the graphical display is weird i.e. [used space] > [rom size] or [used space] = 0 then don't try to trim it!)

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