3DSX file extension - 3DSX format
What is 3dsx file? How to open 3dsx files?
File type specification:
The 3dsx file extension is related to the 3DSX format, an executable file format used by homebrew programs and games for Nintendo DS handheld console.
The 3dsx file contains program executable data.
Default name of *.3dsx file is: boot.3dsx