N+ PSP ModTools - Old project from 2014
Converts the "raw" 16-bit ABGR 4444 Texture into editable DDS format.
Drag and drop a "raw" texture from the game into executeable. You'll get an DDS that now can be edited. When youre finnished with editing drag'n drop it back to convert the DDS to "raw"; Swap the file in the game image out and you're finnished.
For more look into repository wiki.