Most users download the stable melonDS from the official website (v0.9.5 as of this writing). However, to reach the level, you need the latest nightly build or a specially patched version.
When melonDS boots a valid firmware (sourced from a NAND bin), it mimics the hardware power-on sequence. nandbin melonds top
: Select the DSi-mode tab and check Enable DSi mode . Most users download the stable melonDS from the